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Promoting Healthy Environments with a Focus on the Impact of Actions on
Electromagnetic Fields
Mudgal S, Sonigo P, de Toni A, Johansson L, Rualt C, Schütz J. Bio Intelligence Service; Danish Cancer Society, the
Institute of Cancer Epidemiology, 2011
This document was produced for the Directorate General for Health and Consumers as part of the EU health programme� , managed by the Executive Agency for Health and Consumers. Contract reference 2009 62 03
Authors:Shailendra Mudgal, Pierre Sonigo, Arianna de Toni, Linda Johansson, Cécile RualtBio Intelligence Service, France,Joachim Schütz, Danish Cancer Society, Institute of Cancer Epidemiology, Denmark.
Responsibility for the content of the report lies with the authors. The authors do not accept any liability for any direct or indirect damage resulting from the use of his report or its contents. The report does not represent the views of the European Commission; nor is the Commission responsible for any use that may be made of the information contained herein.
This report should be quoted:
Mudgal S, Sonigo P, de Toni A, Johansson L, Rualt C, Schütz J, Promoting Healthy En-vironments with a Focus on the Impact of Actions on Electromagnetic Fields. (20��) European Commission Directorate General for Health and Consumers. Luxembourg.
ISBN 978-92-79-20421-0
© European Communities, 20��
� Second Programme of Community Action on Health. 2008-20�3 OJ 2007 L30� p3-�3
August 2010 Promoting healthy environments: Electromagnetic fields 3
Contents 1. Introduction .................................................................................................... 5
1.1. Objective .............................................................................................................................. 5
1.2. Approach .............................................................................................................................. 5
2. Assessment of EMF exposure ........................................................................... 7
2.1. Background ........................................................................................................................... 7
2.2. Main sources of EMF ............................................................................................................ 8
2.2.1. Static fields ........................................................................................................................................ 9
2.2.2. Extremely low frequency EMF ......................................................................................................... 11
2.2.3. Intermediate frequency EMF ........................................................................................................... 13
2.2.4. Radio frequency EMF ....................................................................................................................... 15
2.3. Current levels of exposure of EU population ..................................................................... 18
2.3.1. Exposure of individuals in the EU population .................................................................................. 18
2.3.2. Additional data needs ...................................................................................................................... 23
2.3.3. Conclusions and methodological issues .......................................................................................... 24
2.4. Health effects ..................................................................................................................... 25
2.4.1. Static fields ...................................................................................................................................... 25
2.4.2. Extremely low frequency fields ....................................................................................................... 26
2.4.3. Intermediate frequency fields ......................................................................................................... 28
2.4.4. Radiofrequency fields ...................................................................................................................... 29
2.4.5. Preliminary conclusions ................................................................................................................... 30
3. Evaluation of the current EU approach ........................................................... 31
3.1. The evolution of public perception .................................................................................... 31
3.2. Current EU approach .......................................................................................................... 34
3.2.1. EU Policy and legal framework ........................................................................................................ 35
3.2.2. Scientific actions .............................................................................................................................. 41
3.2.3. Science-policy interface ................................................................................................................... 49
3.3. Initiatives in Member States .............................................................................................. 51
3.3.1. Policy actions ................................................................................................................................... 51
3.3.2. Scientific actions .............................................................................................................................. 55
3.3.3. Science-policy interface ................................................................................................................... 59
4. Possible measures to avoid unnecessary exposure.......................................... 67
4.1. Different exposure scenarios ............................................................................................. 67
4.2. Technical approches ........................................................................................................... 68
4.2.1. Approaches to reduce exposure to ELF ........................................................................................... 69
4.2.2. Approaches to reduce exposure to IF .............................................................................................. 73
4.2.3. Approaches to reduce exposure to RF ............................................................................................. 74
4.2.4. Approaches to reduce exposure to SF ............................................................................................. 76
4.3. Policy approches................................................................................................................. 76
4 Promoting healthy environments: Electromagnetic fields
August 2010
4.3.1. Policy approaches to reduce exposure to ELF ................................................................................. 77
4.3.2. Policy approaches to reduce exposure to IF ................................................................................... 80
4.3.3. Policy approaches to reduce exposure to RF .................................................................................. 82
4.3.4. Policy approaches to reduce exposure to SF ................................................................................... 85
4.4. Conclusions and recommendations ....................................................................................86
August 2010 Promoting healthy environments: Electromagnetic fields 5
1. INTRODUCTION
1.1. OBJECTIVE
This study aims to support Action 13 relating to electromagnetic fields of the EU
Environment & Health Action Plan by evaluating the impact and the effectiveness of EU
actions undertaken since 2004, as well as by assisting in the identification of future
actions.
Specific objectives of this study include:
Analysing the actual exposure of the general public to EMF in the EU
(extremely low frequencies, intermediate frequencies, and radio frequencies
as defined by the SCENIHR), and the trends in this exposure and public concern
in the EU since 2004.
Assessing the actions taken at EU level since 2004 (regulatory actions, technical
standards, research funding, and scientific assessments)
Identifying additional measures that could be taken to reduce the exposure of
the general public to EMF in all frequency ranges, to assess the advantages and
disadvantages, and to estimate the costs of these measures at EU level.
1.2. APPROACH
This analysis is based on existing information sources and data measurements and
modelling was not performed (e.g. on EMF exposure assessment). A detailed and
comprehensive review of existing literature and legislative sources was carried out.
Scientific information is analysed and validated with external experts in the field in
order to derive reliable conclusions. This report is structured into three main sections:
Analysis of EMF public exposure in the EU (chapter 2. )
Evaluation of the current EU approach (chapter 3. )
Additional measures to reduce the exposure (chapter 4. )
The conceptual framework of this study is presented in Figure 1.1.
6 Promoting healthy environments: Electromagnetic fields
August 2010
Ch
apte
r2
Sources
Ch
apte
r3
Current EU approach
SciencePolicyScience-policy interfacePublic concern
Ch
apte
r4
Additional measures to reduce EMF exposure and their feasibility
Exposure
Health Effects
Uncertainty
Figure 1-1: Conceptual framework for the study
August 2010 Promoting healthy environments: Electromagnetic fields 7
2. ASSESSMENT OF EMF EXPOSURE
2.1. BACKGROUND
Electromagnetic fields (EMF) have existed on Earth since always and are not necessarily
man-made. An example of EMF existing in nature is electric field produced by the local
build-up of electric charges in the atmosphere associated with thunderstorms. During
the twentieth century, man-made sources of EMF have steadily increased due to
electricity demand, wireless technologies, telecommunications, broadcasting, and
medical equipment such as soft tissue healing appliances, magnetic resonance imaging
(MRI), etc.
Due to an extensive development of mobile telecommunications and a significant
increase in the number of electronic appliances since the 1990s, the number and type
of EMF sources have increased, resulting in increased possibilities of our daily exposure
to EMF. There have been scientific and political debates regarding the potential
adverse health effects of EMF, notably at long-term and high levels of exposure.
However, the technologies responsible for EMF also provide social and economic
benefits as they improve the quality of life. Without electricity, our society would come
to a standstill, and both broadcasting and telecommunications have become an
inherent and accepted fact of the modern life.
The issues underlying EMF relate to a diversity of actors. It has thus become a hot topic
not only in the political sphere but also in the domains of public health, health-related
scientific research, and related industries (mobile phone companies, internet service
providers, wireless communication companies, etc.). Numerous studies, including a
series of large-scale epidemiological surveys, have been carried out in different
countries on the possible health effects of EMF on humans, animals, plants, and cell or
tissue cultures. Nonetheless, although some health effects have been observed in
some studies on EMF, no concluding evidence has been established and after more
than two decades of scientific research, no scientific consensus has been achieved
concerning the adverse health effects from EMF exposure (namely long-term
exposure). There are still significant knowledge gaps, namely in multi-exposure and
regarding the effects of long-term exposure.
Conflicting outcomes from research on the potential health effects of EMF have fuelled
the on-going debate on the extent by which the health effects could possibly be caused
by exposure to EMF. While a number of recent studies support either sides of the
debate, many frequently cited reports, such as those conducted by the World Health
8 Promoting healthy environments: Electromagnetic fields
August 2010
Organization (WHO)1 fail to provide conclusive scientific evidence to link EMF exposure
with negative health consequences.
2.2. MAIN SOURCES OF EMF
Electric fields are created by charged particulates and magnetic fields are created by
magnets or charged particulates in movement. EMF are characterised by their
frequency, i.e. number of variations per second, measured in hertz (Hz) and
wavelength (1/frequency), a distance measured in metres. The strength of electric
fields is measured in volts per metre (V/m). Magnetic fields are measured in tesla (T).
In the wave model of electromagnetic radiation, electric and magnetic fields oscillate
together and perpendicular to each other (Figure 2-1). In the corpuscular model,
electromagnetic radiation is described as a flow of photons. Such flow is measured by
its energetic density in Watt per square metre (W/m2).
Figure 2-1: Electromagnetic waves2
EMF can be derived from a variety of natural and man-made sources. Natural sources
of EMF are the Earth’s magnetic field, the solar and lunar cycles, and thunderstorms
which produce electric discharges in the atmosphere. Light itself is an electromagnetic
radiation that can be visually detected. Anthropogenic sources of EMF are mainly
electrical, telecommunication, and medical devices. The electromagnetic fields of
anthropogenic origin are ubiquitous and in general stronger than those of natural
origin3.
EMF have a very wide range of frequencies (Figure 2-2), from non-ionising extremely
low frequency (wavelengths of some hundreds of metres), to optical range (i.e. light,
with a wavelength between 380 and 780 10-9 m) to ionising very high-frequency
(wavelengths around 10-18 m).
1 World Health Organization. Electromagnetic fields (EMF) – Summary of health effects:
www.who.int/peh-emf/about/WhatisEMF/en/index1.html [Accessed online 12/03/2010] 2 Electric and magnetic fields: www.astronomynotes.com/light/s2.htm [Accessed online 25/02/2010]
3 Kato M. Electromagnetics in biology. Springer 2006.
August 2010 Promoting healthy environments: Electromagnetic fields 9
Figure 2-2 : The electromagnetic spectrum5
In this report, only static fields (0 Hz), electromagnetic fields (EMF) with extremely low
frequencies (ELF, between 0 and 300 Hz), intermediate frequencies (IF, between
300 Hz and 100 kHz), and radio frequencies (RF, between 100 kHz and 300 GHz) are
considered. They all belong to non-ionising radiation. Some confusion may exist with
ionising radiations such as X-rays and gamma rays that possess much higher
frequencies and documented health effects.
2.2.1. STATIC FIELDS
Even if only few anthropogenic sources of static fields exist (Table 2-1), there is a rapid
development of new technologies which produce static fields. One of the main
applications producing static fields4 are medical devices, e.g. magnetic resonance
imaging (MRI) scanners (Figure 2-3) used for identifying different types of tissues in the
human body (Box 2-1). Many scientific techniques also use the nuclear magnetic
resonance (NMR) for studying molecular physics, crystals, and non-crystalline materials
through NMR spectroscopy. Static fields are also produced in some industrial processes
used in the aluminium and chlor-alkali industries, in welding processes, and in certain
railway and underground transport systems5. The use of direct current in rail systems
can also generate this type of EMF inside the train.
4 Nuclear magnetic resonance (NMR) is a property that magnetic nuclei have in a magnetic field and
applied electromagnetic (EM) pulse or pulses, which cause the nuclei to absorb energy from the EM pulse and radiate this energy back out. NMR is also routinely used in advanced medical imaging techniques, such as in magnetic resonance imaging (MRI). 5 European Commission, DG Health and Consumers protection website:
www.ec.europa.eu/health/opinions2/en/electromagnetic-fields/index.htm#1 [Accessed online 25/02/2010]
Non-ionising radiation
10 Promoting healthy environments: Electromagnetic fields
August 2010
Table 2-1: Anthropogenic sources of static fields
Source Frequency Occupational exposure
Residential exposure
Ambient exposure
Possibility of exposure
MRI 0 Hz Yes No No
Occasionally for treating patients but possibility of exposure of radiology personnel during the device use
Industrial electrolysis
0 Hz Yes No No Possibility of exposure of workers in chlor-alkali industries
Welding devices
0 Hz Yes No No Possibility of exposure of the welders during welding
Railway and under-ground train systems
0 Hz Yes No Yes Possibility of exposure during transportation/ travels
Figure 2-3: MRI scanner
August 2010 Promoting healthy environments: Electromagnetic fields 11
Box 2-1 – Magnetic Resonance Imaging (MRI) 6
MRI is a medical diagnostic tool used for providing three-dimensional images of body
structures, e.g. brain. MRI uses the magnetic characteristics of the body’s hydrogen
atoms and their interaction with both external magnetic fields and radiofrequencies
to produce highly detailed images of the human body. The nucleus of the hydrogen
atom contains a single proton. Nuclei containing an odd number of protons and/or
neutrons have a characteristic motion in EMF. MRI creates a steady magnetic field and
hydrogen nuclei align themselves in the direction of the magnetic field. A RF field is
then applied to the patient, changing the previous disposition of hydrogen atoms.
When the RF pulse stops, the nuclei return to equilibrium, parallel to the first
magnetic field. During this return to equilibrium, called relaxation, the nuclei lose
energy by emitting their own measurable RF signal, called the response signal. To
produce a 3D image, this signal is encoded by adding a new gradient magnetic field of
low frequency. The colour intensity of a tissue on the image depends on the proton
density, the higher the proton density, the stronger is the response signal. In MRI,
contrasts also depend on the relaxation time for nuclei to return to equilibrium and
the time to send the response signal. When MR images are acquired, the RF pulse is
repeated at a predetermined rate and the response signals can be measured at
various times within the interval. This interval and the time between the application of
the RF pulse and the response signal can be adjusted to contrast different tissue
types. Therefore, MRI devices produce three types of fields: a static EMF, a low
frequency EMF and a radiofrequency EMF.
2.2.2. EXTREMELY LOW FREQUENCY EMF
Electromagnetic fields of extremely low frequency (ELF), i.e. between 0 and 300 Hz,
mainly originate from anthropogenic sources such as electrical appliances and power
transmission and distribution lines (Figure 2-4). Electricity is transmitted from power
stations to cities, factories, and homes through overhead and underground cables.
Such cable networks containing electric current generates ELF fields.
In residential areas, the major sources of ELF fields are electrical equipment (e.g. TV,
computers) and domestic electric installations. In industrial facilities, electric power
installations, welding, induction heaters, and electrified transport systems are
important sources of ELF exposure. ELF fields are also often used in industry for the
induction heating of metals and semiconductors.
ELF fields can be also used in therapeutic and diagnostic applications, such as bone
growth stimulation after a fracture or in wound healing, pain treatment, or cancer
detection5.
6 Simon Fraser University (SFU) computing science. Basic Principles of MRI, 1995:
www.cs.sfu.ca/~stella/papers/blairthesis/main/node11.html [Accessed online 15/03/2010]
12 Promoting healthy environments: Electromagnetic fields
August 2010
Figure 2-4 : Power transmission and distribution lines7
Electromagnetic fields produced by transmission lines are measured by their ground-
level field strength, which varies widely depending on the current flowing through the
conductors, which in turn depends on the demand for electric power, on the
configuration of the transmission line, and on the distance of the measurement point
from the line. Typically, a transmission line’s contribution to the ambient EMF
disappears at distances greater than 100 metres from the line2.
Table 2-2 summarises various types of ELF fields and the potential human exposure.
Table 2-2: Sources of extremely low frequency fields
Source Frequency Occupational exposure
Residential exposure
Ambient exposure
Possibility of exposure
Power transmission and distribution lines
50 Hz Depends on the location
Depends on the location
Yes
Possibility of exposure of people living or working near a line (within 100m)
Household appliances: electric iron, toaster, electric oven, vacuum cleaner, electric shaver, etc.
50 Hz No Yes No
Exposure levels depending on the frequency of use of domestic electrical devices
Trains, trams and subway systems
16 2/3 Hz; 25 Hz or 50 Hz for high-speed lines
Yes No Yes
Possibility of exposure during travel/ transportation. People living in buildings located near such networks are more exposed.
7 Texas Attorney Blog: www.texasattorneyblog.com/utility_and_transmission_line/ [Accessed online
10/03/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 13
Source Frequency Occupational exposure
Residential exposure
Ambient exposure
Possibility of exposure
Welding machines
50 Hz Yes No No
Possibility of exposure of the workers during welding
Induction heaters
50-300 Hz Yes Yes No
Exposure levels depending on the frequency of use of induction heaters
Induction furnaces
50-300 Hz Yes No No
Possibility of exposure for those working next to furnaces
Medical: MRI, bone growth stimulation, wound healing, pain treatment, cancer detection
MRI: 100-1000 Hz Others medical applications: 50-100 Hz
Yes No No
Occasionally for treated patients. Possible exposure of medical personnel during treatments.
Natural sources, e.g. storms
From several Hz to GHz
No No Yes Possibility of exposure during storms
Electric engines in cars
50-60 Hz Yes No Yes Possibility of exposure while driving
Generators used in power plants
50 Hz Yes No No Possibility of exposure of workers in power plants
2.2.3. INTERMEDIATE FREQUENCY EMF
Intermediate frequencies of EMF, ranging between 300 Hz and 100 kHz, are produced
by anti-theft devices (e.g. in shop exit doors), induction hobs and hotplates, electric
engines, and card readers. Other sources include computer and television screens
containing cathode ray tubes, compact fluorescent lamps, radio transmitters, and high
voltage feeders8 (Table 2-3).
This category of EMF can also be generated by industrial processes such as welding,
medical applications such as electrosurgery (Figure 2-5) (which uses electric current to
cut or remove tissues), and MRI9 .
8 Electromagnetic field, health and environment - Proceedings of EHE’07. Studies in Applied
Electromagnetics and Mechanics, 2008. 9 Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR). Health Effects of
Exposure to EMF. 2009
14 Promoting healthy environments: Electromagnetic fields
August 2010
Figure 2-5 : Electrosurgery device10
Table 2-3: Sources of intermediate frequency fields
Source Frequency Occupational
exposure Residential exposure
Ambient exposure
Possibility of exposure
Anti theft devices
tens of Hz to few GHz
Yes No No
In shops, possibility of exposure of the sales personnel during their whole working time
Induction hobs and hotplates
20 to 50 kHz No Yes No
Possibility of exposure during the working of these devices
Card readers (safety, keys, badge, etc.)
100 kHz Yes No No
Possibility of exposure of people passing near these devices /workers
Welding devices
A few hundred kHz
Yes No No
Possibility of exposure of the workers during welding
Induction heaters
Tens of Hz to tens of kHz
Yes Yes No
Exposure levels depending on the frequency of use of induction heaters
Electro-surgery
Hundreds of kHz
Yes No No
Occasionally for treated patients. Possible exposure of medical personnel during treatments.
10
North West dental equipment - electrosurgery: www.dental-chairs.co.uk/electrosurgery.html [Accessed online 10/03/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 15
Source Frequency Occupational
exposure Residential exposure
Ambient exposure
Possibility of exposure
Computer screens (CRT)
100 Hz Yes Yes No
Exposure levels dependent on the frequency of use of computers
Metal detectors
Some tens of kHz to some MHz
No No No
Possibility of exposure in airports, etc. of personnel working near these devices and people subjected to detection
Light bulbs 30-60 kHz Yes Yes No
High exposure in all sites (home, workplace, street, etc.) lighted with light bulbs
Medium –wave Radio transmitters
30-300 kHz Depending of the location
Depending of the location
Depending of the location
Possibility of exposure if the house or the workplace is located within 20 km of the tower
2.2.4. RADIO FREQUENCY EMF
Sources which generate radio frequency (RF) (from 100 kHz to 300 GHz) are
widespread in our society. RF fields are produced by mobile phones and their antennas
and base stations (Figure 2-6). The nature of transmitted RF fields depends on several
factors, including the cell size of the base station and the type of mobile phone.
16 Promoting healthy environments: Electromagnetic fields
August 2010
Figure 2-6 : Mobile phone base stations11
Key sources of RF fields (Table 2-4) include cordless phones, local wireless networks
and radio or television transmission towers3. Other examples of sources of general
exposure to RF fields are medical scanners, microwave ovens, civil and military radar
systems, private mobile radio systems, or new technologies such as digital audio
broadcasting systems, and Wi-Fi.
Some of the more recent anti-theft systems and several industrial appliances, like
broadcasting stations or heating appliances, also operate in the RF range.
In addition, electromagnetic fields in the RF range are used in various therapeutic
applications, like soft tissue healing appliances for analgesic applications (heating body
tissue can ease pain), hyperthermia for burning and killing cancer cells, and
diathermy12. Another common application of RF fields in medicine is magnetic
resonance imaging or MRI (Box 2-1).
Table 2-4: Sources of radio frequency fields
Source Frequency Occupational
exposure Residential exposure
Ambient exposure
Possibility of exposure
Mobile phones
900 MHz – 2 GHz
Yes Yes Yes
Levels of exposure dependent on the frequency of use – also related to the frequency of use of the surrounding people
Cordless phones
1880 MHz - 1900 MHz
Yes Yes No
Possibility of exposure at a frequency dependent on the phone location
11
West Seattle blog: www.westseattleblog.com/category/utilities/page/4 [Accessed online 10/03/2010] 12
Physical therapy using high-frequency electric current, ultrasound, or microwaves to deliver heat to muscles and ligaments. Source: www.aarp.org/health/conditions/articles/harvard__arthritis-keeping-your-joints-healthy_9.html [Accessed online 20/02/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 17
Source Frequency Occupational
exposure Residential exposure
Ambient exposure
Possibility of exposure
Mobile phone base stations
900 MHz - 2 GHz
Yes Yes Yes
Frequency of exposure variable depending on location
Medical applications: MRI, healing appliances, burning cells, medical scanners
MRI: 10-100 MHz Scanner: 2.5 - 10 MHz
Yes No No
Occasionally for treated patients. Possible exposure of medical personnel during treatments
Heating Until some tens of MHz
Yes Yes No Possible exposure when heating is on
Radar systems
3 - 30 GHz Yes Yes Yes Possible exposure when the radar is on
Private mobile radio systems
Some hundreds MHz
No Yes No
Exposure levels dependent on the frequency of use
TV antennas
800 MHz Depends on the location
Yes Yes
Possibility of exposure when home/workplace are located close to an antenna
Radio stations
Some hundreds MHz
Depends on the location
Depends on the location
Yes
Possibility of exposure when home/workplace are located close to a radio station
Microwave ovens
2.45 GHz No Yes No
Exposure dependent on the frequency of use
Anti-theft devices
Hundreds of Hz to few MHz
Yes Yes No
Possible exposure if the device is activated when someone is in the protected building
Wireless computer networks
2 - 5 GHz Yes Yes No
Potential continuous exposure if these systems are installed in the residential and working environment
18 Promoting healthy environments: Electromagnetic fields
August 2010
2.3. CURRENT LEVELS OF EXPOSURE OF EU POPULATION
2.3.1. EXPOSURE OF INDIVIDUALS IN THE EU POPULATION
Numerous surveys have been conducted by regulatory authorities in different Member
States, in compliance with EMF protection guidelines such as Council Recommendation
1999/519/EC. The focus of such surveys is on particular EMF sources, often under
worst case scenarios. All surveys show that non-compliance with the protection
guidelines suggested by the International Commission on Non-Ionising Radiation
Protection (ICNIRP) is generally not an issue; the situation however is different for
regions that have adopted lower protection levels as a precautionary measure, such as
Switzerland, where compliance with guidelines sometimes has an impact on the
location of a mobile phone base station. The data collected from these surveys do not
provide good insight into the exposure levels of individuals, who are often exposed to
multiple sources at the same time and who move from one place to another.
Therefore, data on the EMF exposure of individuals can only be obtained by explicit
measurements, using for example dosimetric devices. Alternatively, the exposure only
in residential areas can be measured when it can be assumed that it is the dominating
exposure. A number of surveys have also been carried out on individuals, but they do
not follow a standard protocol, hence the results are difficult to compare.
Most measurement studies focus on either the ELF or RF range. The electric field
component is rarely investigated for the ELF studies. In contrast, RF studies exclusively
measure the electrical component and report power density in Watt/m2 rather than
field strength in Volt/m. Measurement devices measure limited and device-dependent
frequency ranges. Added to this, exposures below the detection limits of the
measurement devices are quite common (in the RF range it is common to have less
than 10% of measurements above the detection limit) and the way non-detects are
taken into account for measuring total exposure differs from one study to another,
further hampering a direct comparison of results. In a recent measurement study in
Austria13 both ELF and RF median exposure in residential area were measured for 226
individuals. The magnetic and the electrical field components of the night-time ELF
exposure close to the bed were 0.02 µT (magnetic) and 26.2 V/m (electric), and 25% of
the measured values were above 0.07 µT and 50.4 V/m respectively. For same
locations, total RF exposure was measured with a median value of 40.34 µW/m2 and
25% of measured values exceeding 141.87 µW/m2.
An overview of common sources of the exposure of individuals to EMF is given in the
2009 report of the SCENIHR. The highest exposures in the ELF range occur during the
use of electrical appliances that are held close to the body (several hundreds of µT
related to the use of electric razors or hair dryers) or in occupational settings (compare
13
Tomitsch J, Dechant E, Frank W. Survey of electromagnetic field exposure in bedrooms of residences in lower Austria. Bioelectromagnetics. 2009 Sep 24;31(3):200-208
August 2010 Promoting healthy environments: Electromagnetic fields 19
with job-exposure-matrix14). While appliance-related exposure is usually intermittent
and very short-term, thus hardly contributing to cumulative exposure over the day, in
some workplaces exposure is higher than usual levels over the whole working time,
and workers in those occupations experience the highest levels of exposure. That is
why many studies investigating risks related to EMF exposure target occupational
exposure15. Long-term environmental exposures occur in people living close to
installations of power transmission and distribution lines, mainly overhead high-
voltage power lines16. While normal ‘background’ ELF magnetic field levels averaged
over 24 hours are between 0.01 and 0.05 µT in residential areas, often up to 0.1 µT in
apartment buildings due to higher numbers of power consumers, several µT
exceptionally occur in residences situated very close to power lines.
Some data on individual levels of exposure are available from epidemiological studies.
Large-scale studies in the UK and in Germany have shown that average magnetic fields
(median) above 0.2 µT seldom occur (< 2% of houses). In the residences with magnetic
fields above 0.2 µT, one-third of these fields were due to close vicinity to high-voltage
power lines (110-420 kV), one-third to low voltage (380 V) installations, and the
remaining one-third to indoor wiring17,18. Indoor-transformers in houses have also been
identified as possible elevated field sources19,20. While it is likely that elevated magnetic
field levels are measured in residences close to power lines, the actual magnetic field
level depends on the power load of the lines, which is variable by individual power line
and time, and therefore the distance to a power line is not a perfect indicator of
magnetic field exposure21.
Several European railway systems use alternating current (often 16 2/3 Hz) and
therefore contribute to exposure, mainly to train drivers22, intermittently to travellers
14
Bowman JD, Touchstone JA, Yost MG. A population-based job exposure matrix for power-frequency magnetic fields. J Occup Environ Hyg. 2007 Sep;4(9):715-28 15
Kheifets L, Bowman JD, Checkoway H, Feychting M, Harrington JM, Kavet R, Marsh G, Mezei G, Renew DC, van Wijngaarden E. Future needs of occupational epidemiology of extremely low frequency electric and magnetic fields: review and recommendations. Occup Environ Med. 2009 Feb;66(2):72-80 16
Brix J, Wettemann H, Scheel O, Feiner F, Matthes R. Measurement of the individual exposure to 50 and 16 2/3 Hz magnetic fields within the Bavarian population. Bioelectromagnetics. 2001 Jul;22(5):323-32 17
Schüz J, Grigat JP, Störmer B, Rippin G, Brinkmann K, Michaelis J. Extremely low frequency magnetic fields in residences in Germany. Distribution of measurements, comparison of two methods for assessing exposure, and predictors for the occurrence of magnetic fields above background level. Radiat Environ Biophys. 2000 Dec;39(4):233-40 18
Maslanyj MP, Mee TJ, Renew DC, Simpson J, Ansell P, Allen SG, Roman E. Investigation of the sources of residential power frequency magnetic field exposure in the UK Childhood Cancer Study. J Radiol Prot. 2007 Mar;27(1):41-58 19
Thuróczy G, Jánossy G, Nagy N, Bakos J, Szabó J, Mezei G. Exposure to 50 Hz magnetic field in apartment buildings with built-in transformer stations in Hungary. Radiat Prot Dosimetry. 2008;131(4):469-73 20
Ilonen K, Markkanen A, Mezei G, Juutilainen J. Indoor transformer stations as predictors of residential ELF magnetic field exposure. Bioelectromagnetics. 2008 Apr;29(3):213-8 21
Maslanyj M, Simpson J, Roman E, Schüz J. Power frequency magnetic fields and risk of childhood leukaemia: misclassification of exposure from the use of the 'distance from power line' exposure surrogate. Bioelectromagnetics. 2009 Apr;30(3):183-8 22
Röösli M, Lörtscher M, Egger M, Pfluger D, Schreier N, Lörtscher E, Locher P, Spoerri A, Minder C. Mortality from neurodegenerative disease and exposure to extremely low-frequency magnetic fields: 31 years of observations on Swiss railway employees. Neuroepidemiology. 2007;28(4):197-206
20 Promoting healthy environments: Electromagnetic fields
August 2010
and to people living in residences close to railroads23. At intermediate frequencies,
security or anti-theft devices, e.g. at shop exits, are common exposure sources,
occasionally in nature for customers but significantly if shop assistant’s work places are
close to the installations. Although reference levels for exposure of the general public
might be exceeded in the immediate vicinity, workplaces are usually located some
meters away and typical exposures are well below protection limits24; however, large-
scale systematic measurement surveys are missing and there is little monitoring of
compliance with protection guidelines once the devices are installed.
Most other EMF exposures are occupational. Visual display units containing cathode
ray tubes are still common sources of exposure and emit in both the ELF and the IF
range, in the order of 0.001 to 0.05 µT. Radio transmitters operated in the long-wave
range (30 kHz to 300 kHz) can cause exposure in the IF range with levels above the
ICNIRP limits, and therefore safety measures are implemented for both the general
public and workers.
In the RF range, the use of mobile phones is associated with exposure to the head
concentrated in small zones, especially temporal lobes of the brain25. High exposures,
i.e. field levels exceeding the protection limits for the general public, are experienced
in occupational settings, e.g. among RF welders, RF heat sealers and broadcast tower
maintenance personnel; however, the number of exposed persons is small as only few
people are working in such conditions26.
Other sources are broadcast towers for TV and radio, and mobile phone base stations.
In the past, amplitude-modulated radio broadcasting was a major source of exposure,
due to very powerful antennas operating to serve relatively large areas, so exposures
above 1 V/m were measured several km away from the towers. Exposures from TV and
frequency-modulated radio were lower and the change to the digital networks leads to
further decrease in exposure levels27. Fields above 1 V/m were also measured in the
vicinity of mobile phone base stations, in residences in the main beam of the antenna
with free view to the base station28.
Another major source of exposure is cordless phones. While the emission from
handsets is much lower than that from mobile phones, the duration of use can be
23
Schüz J, Grigat JP, Brinkmann K, Michaelis J. Childhood acute leukaemia and residential 16.7 Hz magnetic fields in Germany. Br J Cancer. 2001 Mar 2;84(5):697-9 24
Bernhardt JH, McKinlay AF, Matthes R (editors). Possible health risks to the general public from the use of security and similar devices. Report of the Concerted Action QLK4-1999-01214 (European Commission), ICNIRP 12/2002 25
Cardis E, Deltour I, Mann S, Moissonnier M, Taki M, Varsier N, Wake K, Wiart J. Distribution of RF energy emitted by mobile phones in anatomical structures of the brain. Phys Med Biol. 2008 Jun 7;53(11):2771-83 26
Breckenkamp J, Berg-Beckhoff G, Münster E, Schüz J, Schlehofer B, Wahrendorf J, Blettner M. Feasibility of a cohort study on health risks caused by occupational exposure to radiofrequency electromagnetic fields. Environ Health. 2009 May 29;8:23 27
Schubert M, Bornkessel C, Wuschek M, Schmidt P. Exposure of the general public to digital broadcast transmitters compared to analogue ones. Radiat Prot Dosimetry. 2007;124(1):53-7 28
Schüz J, Mann S. A discussion of potential exposure metrics for use in epidemiological studies on human exposure to radiowaves from mobile phone base stations. J Expo Anal Environ Epidemiol. 2000 Nov-Dec;10(6 Pt 1):600-5
August 2010 Promoting healthy environments: Electromagnetic fields 21
substantially longer, leading to a higher cumulative exposure. Although the RF fields
emitted by cordless phone base stations are low and decrease rapidly29, they become
negligible beyond 50 cm. Individuals who keep the base station in the bedroom might
experience higher exposure than from outdoor mobile phone base stations, as their
fields are shielded by walls.
WHO summarised measurement studies conducted until 2007 in the ELF range30.
Magnetic fields have been repeatedly assessed in European studies with measurement
periods ranging from 1 to 7 days, either in the bedroom/domestic setting or with
personal dosimeters. In all studies, the majority of studied persons were exposed to
magnetic field levels below 0.1 µT (73.6- 89.9 %), but few (0.5-4.5%) had exposure
levels above 0.3 µT (based on arithmetic means31). Geometric means32 were only
available for a small number of studies, but more than 90% had < 0.1 µT and 0.4-1.2 %
had > 0.4 µT. The electric field component was more difficult to assess as it is more
susceptible to shielding and perturbation by conduction bodies.
The average European RF exposure level is more difficult to assess, as exposure levels
have been reported in different ways in different countries and a large proportion of
measurements in most studies were below the detection limits of the existing
measurement equipment. Furthermore, many studies were conducted in suspected
high exposure environments such as urban areas and near antennas or other sources
of a priori interest for the given study, and only a limited number of countries
conducted measurements of representative exposure levels of individuals. The existing
measurements were conducted for various reasons and no uniform or comparable
measurement protocol was applied. Since the focus of the conducted studies was often
to compare existing health risks and not to describe exposure as such, the data that
were reported were not always sufficient to assess the average or median exposure
levels. Given these limitations, some indications of the exposure levels are provided
from the studies that have used the various personal measurement devices that have
become available in recent years33.
In the Swiss QUALIFEX study 166 subjects carried meters for 7 days around Basel
during 2007-200834. The median exposure was 0.09 mW/m2 (ranging from 0.014-
29
RF fields decrease with square of the distance in theory, but that rarely applies, as an apartment is usually not free space but full of all kind of items that could shield, reflect etc. 30
www.who.int/peh-emf/publications/elf_ehc/en/index.html [Accessed online 09/03/10] 31
The arithmetic mean of a set of values, commonly called the mean or the average, is the sum of all the values divided by the number of items in the list. The arithmetic mean is not a robust statistic because it is influenced by outliers. Thus it does not match with the notion of “middle” of the distribution of the values. 32
The geometric mean indicates the central tendency of a set of numbers. In the geometric mean, the numbers are multiplied and then the nth root (where n is the count of numbers in the set) is applied to the result. The geometric mean takes into account the proportion of the values in the distribution. 33
Radon K, Spegel H, Meyer N, Klein J, Brix J, Wiedenhofer A, Eder H, Praml G, Schulze A, Ehrenstein V, von Kries R, Nowak D. Personal dosimetry of exposure to mobile telephone base stations? An epidemiologic feasibility study comparing the Maschek dosimeter prototype and the Antennessa SP-090 system. Bioelectromagnetics. 2006 Jan;27(1):77-81 34
Frei P, Mohler E, Neubauer G, Theis G, Bürgi A, Fröhlich J, Braun-Fahrländer C, Bolte J, Egger M, Röösli M. Temporal and spatial variability of personal exposure to radio frequency electromagnetic fields. Environ Res. 2009 Aug;109(6):779-85
22 Promoting healthy environments: Electromagnetic fields
August 2010
0.881 mW/m2) and the median night-time exposure was about one third of the
daytime exposure (0.028 mW/m2), with the main contributors being mobile phones,
mobile phone base stations, and DECT cordless phones. Living close to mobile phone
base stations, broadcast transmitters, or owning a mobile phone, cordless phones, or
WLAN equipment, all increase mean exposure. A French study with 24-hour personal
measurements of a random population sample of 377 subjects reported a total mean
field of 0.201 V/m35,36. As in the Swiss study DECT, UMTS and WLAN frequencies were
major contributors but also FM radio was high. Exposure in more rural locations was
lower than in urban centres (0.156 V/m vs. 0.231 V/m) but no difference between day
and night was seen for total exposure. In both the Swiss and French studies more than
half of the total RF field measurements were below the detection level of the
measurement devices. In a Bavarian study of children (n=1477) and adolescents
(n=1508) who carried dosimeters for 24 hours, median exposure was reported as
0.17% of the ICNIRP protection guidelines (range 0.13-0.92 %), with the exposure being
higher in the more urban areas37.
Several further studies using stationary measurements have been carried out. A large
German cross-sectional study included 1326 participants38. In 65.8% of the households
a mean total field value below the detection limit of the dosimeters of 0.05 V/m was
measured for the mobile phone base station frequencies. The 90% percentile was 0.1
V/m (0.027 mW/m2) and this was lower in the rural area than in the suburban and
urban areas. The maximum value was 1.141 V/m (3.452 mW/m2).
More recently a study on RF performed measurements in homes, offices, public
transports, and outdoor in five European countries (Belgium, Switzerland, Slovenia,
Hungary, and the Netherlands)39. The aim was to compare mean exposure levels and
contributions of different sources of RF in different environments. This study showed
that the exposure levels measured are in the same order of magnitude in all countries.
The highest RF exposure occurs in transportation vehicles (cars, buses, trains), mainly
due to radiation from mobile phone handsets, followed by outdoor urban exposure,
offices, and urban homes. The Netherlands are the exception because the highest
exposure levels were measured in offices. However, all the exposure levels were below
the international exposure limits. The study concludes that mobile telecommunication
can be considered as the main contribution to RF exposure in all countries studied.
35
Viel JF, Cardis E, Moissonnier M, de Seze R, Hours M. Radiofrequency exposure in the French general population: band, time, location and activity variability. Environ Int. 2009b Nov;35(8):1150-4 36
Viel JF, Clerc S, Barrera C, Rymzhanova R, Moissonnier M, Hours M, Cardis E. Residential exposure to radiofrequency fields from mobile phone base stations, and broadcast transmitters: a population-based survey with personal meter. Occup Environ Med. 2009a Aug;66(8):550-6 37
Thomas S, Kühnlein A, Heinrich S, Praml G, von Kries R, Radon K. Exposure to mobile telecommunication networks assessed using personal dosimetry and well-being in children and adolescents: the German MobilEe-study. Environ Health. 2008 Nov 4;7:54 38
Breckenkamp J, Berg-Beckhoff G, Münster E, Schüz J, Schlehofer B, Wahrendorf J, Blettner M. Feasibility of a cohort study on health risks caused by occupational exposure to radiofrequency electromagnetic fields. Environ Health. 2009 May 29;8:23 39
Joseph W., Frei P., Röosli M., et al. Comparison of personal radiofrequency electromagnetic field exposure in different urban areas across Europe. Environ Res. 2010 July 16
August 2010 Promoting healthy environments: Electromagnetic fields 23
2.3.2. ADDITIONAL DATA NEEDS
There is an apparent lack of data on individuals’ exposure to EMF across all EU Member
States. The lack of direct personal measurement surveys in the ELF range could be
compensated by good knowledge about emissions of the major EMF sources, together
with data on the numbers of installations and the possibility to calculate magnetic
fields based on the characteristics of these installations. Additionally, numerous
epidemiological studies have been conducted, providing some insight into prevalence
of exposure and the composition of which field sources contribute to the total
exposure. However, most of those studies come from Northern and Western Europe
and, with the exception of Hungary, little information is available for Eastern European
countries. Little is known about the IF EMF; however, it appears that exposure of the
general public is occasional as most exposures are occupation-related. Nevertheless, in
some instances, compliance with protection guidelines appears to be a problem for
some of the anti-theft devices, especially given that pregnant women work in shops
equipped with such devices. In the RF range, the focus of measurement surveys is on
emission of particular sources and generally little is known about individual exposure.
Again, epidemiological studies provide some preliminary insight, but given the diversity
of their aims (for example, determination of the incidence of various cancers, study of
sleep disturbance, etc.), the measurement results of those studies are difficult to
compare. Before large-scale measurement campaigns are set up, there is a need for
standardisation, both on the methodology of conducting the field studies and in the
reporting of results. The EC-funded EFRHAN project40 includes a work package dealing
with comparability and availability of measurement data.
While all RF measurement surveys of sources and epidemiological studies so far
suggest that the everyday exposure levels of the general public are well below the
protection guidelines, it is difficult to predict whether groups in the population with
elevated exposure exist and, if so, to what extent they are exposed above the normal
’background‘ level. Technologies are also changing rapidly and the impact of this on
total exposure of an individual remains largely unclear. It is assumed that the change
from analogue to digital technology in radio and TV broadcasting is associated with a
decrease in exposure levels. The change from GSM technology for mobile
telecommunication to UMTS technology is also associated with a lower exposure to RF
during mobile phone use, as UMTS usually operates with lower emissions. At the same
time, new technologies emerge or the use of these technologies by the population
becomes more widespread. In addition, the lower the number of transmission stations
to serve a certain territory size or the larger the size of the served territory, the higher
the strength of emitted signals.
40
EFHRAN – European health risk assessment network on EMF exposure website: efhran.polimi.it/index.html
24 Promoting healthy environments: Electromagnetic fields
August 2010
Three questions in the RF range are of particular interest:
1) What are average total RF exposure levels in the general population in
different locations?
2) Is the composition of total RF exposure level dependent on the location, i.e.
which field sources contribute most to the overall exposure?
3) Are exposure levels lower in areas with defined precautionary measures such
as lower protection limits than those defined by ICNIRP, like in Brussels, Italy or
Switzerland?
A prerequisite for addressing these questions are joint actions for both the design and
conduct of measurement campaigns.
2.3.3. CONCLUSIONS AND METHODOLOGICAL ISSUES
The main methodological issues are to further improve personal dosimeters to
measure the exposure levels of individuals to RF fields and to develop a standard for a
measurement protocol to enable the comparison of measurement surveys across
countries. With regard to the devices, there is a need to fulfil the following
requirements: i) covering the whole relevant frequency spectrum and providing both
total and frequency range measures; ii) minimising measurement artefacts due to
device location; iii) obtaining a high acceptance of study participants to carry the
device with them for longer time periods, thus it has to be relatively small, light and
well designed; iv) long term recording, i.e. enough storage capacity for measured
values; v) recording of start and stop of the measurement, GPS logger and interface to
personal computers; vi) easy to calibrate; vii) obtaining the highest possible validity and
reliability of measurements. With regard to dissemination, there is a high need for
standardisation of reported values, as currently the results from surveys are hardly
comparable. There are two types of protocols, one for population measurement
surveys (the sample has to be representative of the target population and the day of
the measurement has to be representative of the participants’ usual activity patterns)
and one for microenvironment measurement surveys (the target is microenvironments
under normal operating conditions and population exposure will be estimated based
on time spent in the respective microenvironment). A suggestion for such protocols
was developed by Röösli et al.41
41
Röösli M, Frei P, Bolte J, Neubauer G, Cardis E, Feychting M, Gajsek P, Heinrich S, Joseph W, Mann S, Martens L, Mohler E, Parslow R, Poulsen AH, Radon K, Schüz J, Thuroczy G, Viel JF, Vrijheid M. Proposal of a study protocol for the conduct of a personal radiofrequency electromagnetic field measurement campaign. Under review
August 2010 Promoting healthy environments: Electromagnetic fields 25
2.4. HEALTH EFFECTS
The health effects of EMF on the human body could not only depend on the field
strength and frequency of EMF but also on the level of exposure, as well as individual
characteristics such as body size, angle towards the field, or age42. Children, for
instance, are potentially more vulnerable to RF fields because of the potentially greater
sensitiveness of their nervous systems to the heating induced by this category of fields.
This is due to the fact that their brain tissue is more conductive than that of adults and
to their different physiology and cell growth dynamics. Moreover, it should be
considered that they may have a longer exposure during their lifetime compared to
adult individuals43.
Low and high frequency electromagnetic waves affect the human body in different
ways.
2.4.1. STATIC FIELDS
After an exposure to static EMF, short term effects have been observed on sensory
functions. MRI workers exposed to static fields, for example, noted symptoms of
sensorial disturbance such as nystagmus and tonic vestibular asymmetry44. These
symptoms were present during exposure, but no effect could be detected on the
vestibular function thirty minutes after the end of the exposure45. An increase in the
brain activity and a trend for decreased performance in cognitive-motor tests were
observed during exposure to static fields produced by an MRI scanner46,47. In vivo
studies on animals have shown that static fields could induce effects on neuronal
functioning, for example changing amplitude and duration of the action potential48 in
neurons. In vitro studies also show that low levels of exposure to static EMF may
modify membrane properties of neurons. These effects have been reported to be
reversible9.
42
WHO website, ‘EMF current standards: www.who.int/peh-emf/about/WhatisEMF/en/index4.html [Accessed online 25/02/2010] 43
Kheifets L., Repacholi M., Saunders R., et al. The Sensitivity of Children to Electromagnetic Fields. Pediatrics. 2005;116(2):303-313 44
Nystagmus corresponds to specific involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders. It often reflects abnormal stimulation of the sensorial organ of equilibrium, i.e. the vestibule of the inner ear. Tonic vestibular asymmetry describes a situation where left and right vestibules are not reacting equally. 45
Patel M, Williamsom RA, Dorevitch S, Buchanan S. Pilot study investigating the effect of the static magnetic field from a 9.4-T MRI on the vestibular system. J Occup Environ Med 2008; 50:576-83 46
Toyomaki A, Yamamoto T. Observation of changes in neural activity due to the static magnetic field of an MRI scanner. J Magn Reson Imaging 2007; 26:1216-21 47
De Vocht F, Stevens T, Glover P, Sunderland A, Gowland P, Kromhout H. Cognitive effects of head movements in stray fields generated by a 7 Tesla whole-body MRI magnet. Bioelectromagnetics 2007; 28:247-55 48
An action potential (or nerve impulse) is a transient change in the electrical potential of the membrane voltage of an excitable cell such as a nerve or muscle fiber. This electrical charge travels along the axon to the neuron's terminal where it triggers or inhibits the release of a neurotransmitter and then disappears. (Source: mindsci-clinic.com/neuro_jargon.htm)
26 Promoting healthy environments: Electromagnetic fields
August 2010
Static EMF could also affect the expression of genes in humans and other mammalian
cells, according to the exposure duration and the field force. In several studies using
cultured cell lines, an exposure to several hundreds of mT was observed to induce gene
expression alteration or DNA damage. However these results are controversial. For
example some in vitro studies showed that static fields produce an inhibition of
osteoblasts differentiation leading to a decrease of bone formation49 whereas others
studies reported a promotion of osteoblast differentiation in vivo and in clinical
studies50.Such genotoxic effects can be repaired and thus are not permanent. In others
studies stronger fields, like in MRI (up to several tesla), do not lead to genotoxic
effects9.
Concerning static fields, contradictory data exists regarding the potential effects on
blood flow and vessel growth, on foetal development, etc. Moreover, there is no
evidence of the carcinogenicity of static EMF in humans and no relevant data are
available in experimental animals51. Studies in animals exposed for example to 3 T
static EMF showed that static EMF could be involved in the decrease of perception of
pain but these results have not been confirmed in humans52.
2.4.2. EXTREMELY LOW FREQUENCY FIELDS
ELF fields are a possible carcinogen which might contribute to the development of
childhood leukaemia. The limited association between childhood leukaemia and ELF
found in epidemiological studies, along with little evidence of carcinogenicity in cell
lines and experimental animals, has led to the classification of ELF by the International
Agency for Research on Cancer (IARC) as a ’possible human carcinogen‘ (group 2B)53. A
recent molecular and epidemiological study54 which aimed to have a better
understanding of the molecular mechanisms underlying childhood leukaemia effect
due to EMF exposure, suggests an association with defects in DNA-repair enzymes that
could be caused by transformers and power lines66. Nevertheless, no experimental
evidence and no plausible causal mechanism have been identified.
49
Denaro V., Cittadini A., Barnaba SA., et al. Static Electromagnetic Fields Generated by Corrosion Currents Inhibit Human Osteoblast Differentiation. Spine. 2008; 33(9):955-959 50
Sakurai T., Terashima S., Miyakoshi J. Enhanced secretion of prostaglandin E2 from osteoblasts by exposure to a strong static magnetic field. Bioelectromagnetics. 2007; 29(4):277-283 51
International Agency for Research on Cancer (IARC). 2002. Monographs on the evaluation of carcinogenic risks to humans (Non-ionizing radiation, Part 1: Static and extremely low-frequency (ELF) electric and magnetic fields. Lyon: International Agency for Research on Cancer, Monograph, vol. 80 52
László J, Gyires K. Homogeneous static magnetic field of a clinical MR significantly inhibits pain in mice. Life Sci 2009; 84:12-7 53
International Agency for Research on Cancer (IARC). 2002. Monographs on the evaluation of carcinogenic risks to humans (Non-ionizing radiation, Part 1: Static and extremely low-frequency (ELF) electric and magnetic fields. Lyon: International Agency for Research on Cancer, Monograph, vol. 80 54
Yang Y, Jin X, Yan C, Tian Y, Tang J, Shen X. Case-only study of interactions between DNA repair genes (hMLH1, APEX1, MGMT, XRCC1 and XPD) and low-frequency electromagnetic fields in childhood acute leukemia. Leuk Lymphoma 2008; 49:2344-50
August 2010 Promoting healthy environments: Electromagnetic fields 27
To date, in ELF health risk assessment, childhood leukaemia is considered as the
‘critical effect’, meaning that this disease is viewed as the first critical sign of significant
adverse health effect appearing after exposure55.
One of the known impacts of ELF fields is their capacity to excite nerve and muscle
cells. As nervous tissues are sensitive to electrical signals, ELF fields could then modify
brain electrical signals, and finally change the response time for complex reasoning
tasks at high levels of exposure. However, despite some data showing a potential
impact on neuronal cells, the link between ELF fields, neurodegenerative diseases and
brain tumours remains unclear. Recent in vivo studies provided indications for effects
on the nervous system; however, there are still inconsistencies in the data and no
definite conclusions can be drawn regarding humans. It is notable that in vivo and in
vitro studies show effects at ELF exposure levels (from 0.10 mT and above) that are
considerably higher than the levels encountered in the epidemiological studies (µT-
levels)9. Thus, it is important to stress that important inconsistencies exist between the
effects observed in vivo and in vitro and the results of epidemiological studies in
humans.
Recent research articles56,57 have reported an increase in the incidence rate of
Alzheimer’s disease in specific groups of workers (seamstresses and tailors, rail
workers, electricians) that are highly exposed to ELF. The increased rate of Alzheimer’s
disease could be linked to the stimulation by ELF fields of the beta-amyloid58 peptide
secretion59, which plays an important role during the development of the disease, and
a decreased production of melatonin, which is influenced by long-term and high levels
of exposure to ELF. Falone60 reported changes in the antioxidant defence system in the
brain cortical cells of exposed female rats which might be another relevant explanation
of neurodegenerative diseases (like Alzheimer's disease). A study61 on 4.7 million
persons of the Swiss National Cohort during the period 2000–2005, supports the
association between residential exposure to magnetic fields from power lines and both
Alzheimer’s disease and senile dementia, but not of amyotrophic lateral sclerosis (ALS)
or other neurodegenerative diseases. Hug62 confirms the relation between exposure to
55
Kheifets L., Afifi AA., Shimkhada R. Public Health Impact of Extremely Low-Frequency Electromagnetic Fields. Environ Health Perspect. 2006;114(10):1532-1537 56
Davanipour Z., Sobel E. Long-term exposure to magnetic fields and the risks of Alzheimer’s disease and breast cancer: Further biological research. Pathophysiology. 2009;16(2-3):149–156 57
Röösli M, Lörtscher M, Egger M., et al. Mortality from neurodegenerative disease and exposure to extremely low-frequency magnetic fields: 31 years of observations on Swiss railway employees. Neuroepidemiology. 2007;28(4):197-206 58
Beta amyloid is a small protein (or peptide) which may form aggregates in the nervous system. Such aggregation may reduce synapses function and conduction of nerve impulses and lead to the memory loss and dementia that are features of Alzheimer's syndrome. 59
Del Giudice E, Facchinetti F, Nofrate V, et al. Fifty Hertz electromagnetic field exposure stimulates secretion of beta-amyloid peptide in cultured human neuroglioma. Neurosci Lett 2007; 418:9-12 60
Falone S, Mirabilio A, Carbone MC, et al. Chronic exposure to 50Hz magnetic fields causes a significant weakening of antioxidant defence systems in aged rat brain. Int J Biochem Cell Biol 2008; 40:2762-70 61
Huss A., Spoerri A., Egger M., et al. Residence near power lines and mortality from neurodegenerative diseases: longitudinal study of the Swiss population. Am J Epidemiol. 2009; 169(2):167-175 62
Hug K., Röösli M., Rapp R. Magnetic field exposure and neurodegenerative diseases – recent epidemiological studies. Soz Praventiv Med. 2006;51:210–220
28 Promoting healthy environments: Electromagnetic fields
August 2010
EMF with a magnetic field between 0.2 µT and 1 µT and ALS for electric, electronic
work and welding, but not for other occupational groups having a high exposure to
low-frequency EMF.
Associations between exposure to ELF electromagnetic fields and stress, suicide or
depression, even if suspected, have not been well established, and more research is
necessary. In vivo studies on hamsters have shown an increased insulin secretion after
2 or 5 days of exposure to ELFs. It has also been suggested that a common and possibly
general response to the exposure to ELF fields could be the activation of the genes
encoding the heat shock proteins which react to stress63.
Self-reported symptoms, also called ‘electromagnetic hypersensitivity’ are symptoms
defined on the basis of the experience reported by individuals afflicted by EMF72. To
date, no study supports a causal relationship between ELF fields and self-reported
symptoms, such as fatigue, headache, concentration difficulties, nausea, heart
palpitation, dermatological symptoms such as redness, tingling and burning sensations,
etc.
Regarding cardiovascular disease, an association was considered unlikely. Nevertheless
ELF fields could influence the cardiovascular system, for example by slightly decreasing
or increasing the heart rate, by about 3-5 beats/minutes64. Studies of pregnancy
outcomes in women working with computer screens have provided no consistent
evidence for adverse effects on reproduction, no excess risk of spontaneous abortion
or malformations. Other studies observe a slight increase of early pregnancy loss,
prematurity and low birth weight in the children of workers in the electronics industry,
but in this case the symptoms may not be exclusively caused by EMF exposures66.
2.4.3. INTERMEDIATE FREQUENCY FIELDS
Experimental and epidemiological data on the health effects caused by IF exposure are
very sparse. Assessment of acute health risks in the IF range is currently extrapolated
on known hazards at lower (ELF range) and higher frequencies (RF range). Therefore
the deduced biological effects of IF fields include nerve stimulation at the lower end of
the range and heating at the upper end of the range9.
63
Sakurai T, Yoshimoto M, Koyama S, Miyakoshi J. Exposure to extremely low frequency magnetic fields affects insulin-secreting cells. Bioelectromagnetics 2008; 29:118-24 64
WHO. Electromagnetic fields and human health – Static and extremely low frequency (ELF) fields www.who.int/peh-emf/about/en/Static%20and%20ELF%20Fields.pdf [Accessed online 26/02/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 29
2.4.4. RADIOFREQUENCY FIELDS
Heating of body tissues is the main known biological effect of RF. In microwave ovens
this property is employed to cook food. However, in general, the environmental levels
of RF due to anthropogenic sources are not sufficient to produce observable health
effects65.
To date, scientific evidence does not clearly support a link between exposure to RF and
certain self-reported symptoms (headaches, anxiety, suicide and depression, nausea,
fatigue, loss of libido) which could rather be due to a nocebo effect (an adverse non-
specific effect that is caused by expectation or belief that something is harmful).
However, RF fields can influence electroencephalogram patterns and modify the stages
of sleep in humans.
There is no significant evidence that RF cause cancer in humans. The use of mobile
phones does not seem to increase the risk of cancer, especially when they are used for
less than ten years. Studies that were published in the Interphone project which pools
data from five EU countries (4 Nordic countries and the UK), support this finding9.
However, these results can be explained by the fact that the average duration of
human exposure to RF fields from mobile phones could be shorter than the time
required to induce cancer. Further research is required to identify whether a long-term
(well beyond ten years) human exposure to such phones might pose some cancer risk.
The potential cancer risk of exposure to RF from transmission towers has been often
studied but in most cases, no solid conclusions could be drawn, even if some studies
have shown an increased risk of leukaemia in children living close to strong radio or
television broadcast transmitters9. In vivo research in rodents shows that RF are not
carcinogenic and in vitro studies fail to provide evidence of the genotoxicity (capability
to induce DNA-damage) of RF9.
However, numerous studies have shown that RF fields are teratogenic66 at exposure
levels sufficiently high to cause significant increase of temperature, but there is no
consistent evidence of RF field effects at non-thermal exposure levels67.
To date, no effects on functions/aspects of the nervous system, such as cognitive and
sensory functions, structural stability, and cellular responses, have been shown9.
65
WHO website, electromagnetic fields – Summary of health effects: www.who.int/peh-emf/about/WhatisEMF/en/index1.html [Accessed online 25/02/2010] 66
Relating to substances or agents able to disturb the growth and development of an embryo or foetus (Source: www.medterms.com/script/main/art.asp?articlekey=22266 [Accessed online 12/03/2010] 67
Juutilainen J. Developmental effects of electromagnetic fields. Bioelectromagnetics. 2005;Suppl 7:S107-115
30 Promoting healthy environments: Electromagnetic fields
August 2010
2.4.5. PRELIMINARY CONCLUSIONS
Carcinogenic evidence is only present for ELF fields which might contribute to an
increase in childhood leukaemia, but at present, in vitro studies did not provide a
mechanistic explanation of this epidemiological finding. If the association is causal, it is
estimated that about 1% of childhood leukaemia cases in Europe might be attributable
to ELF fields.
According to in vivo studies exposing animals to high levels of EMF, there is no doubt
that short-term exposure to very high levels of EMF can be harmful to health – e.g.
causing eye irritation. However, experiments with healthy volunteers indicate that, in
general, the low levels of exposure in the open space or in the home do not cause any
apparent detrimental effects. There is little scientific evidence to support the idea of
electromagnetic hypersensitivity, even if it is often self-reported. Even if some
biological effects exist, they do not result in health consequences: the compensatory
mechanism of the body must be exceeded to show an impact on health. For example,
RF exposure increases the temperature of the body; however, the temperature
increase will only have detrimental health consequences if it exceeds 2-3°C68. In
mammals, most studies have shown no effects of prenatal exposure to ELF or IF fields
on development. However, additional studies on the effects on development might
increase our understanding of the sensitivity of biological organisms to EMF68.
There are still significant knowledge gaps, namely concerning the effects of long-term
exposure to RF. Scientists have no hindsight on the recent EMF exposure and to date
effects of long-term exposure are not known. It is worth noting that the effects of EMF
can be cumulative and build up in the body over time69. Despite the number of studies
on EMF health impacts, there is still a lack of adequate data for a proper risk
assessment of each frequency of EMF. More research is necessary, especially to clarify
the many mixed and sometimes contradictory results9.
68
Health effects on electromagnetic fields. Expert Group on Health Effects of Electromagnetic Fields: www.dcenr.gov.ie/NR/rdonlyres/9E29937F-1A27-4A16-A8C3-F403A623300C/0/ElectromagneticReport.pdf 69
Health and electromagnetic fields, European commission. 2005
August 2010 Promoting healthy environments: Electromagnetic fields 31
3. EVALUATION OF THE CURRENT EU APPROACH
3.1. THE EVOLUTION OF PUBLIC PERCEPTION
Widespread public concerns have been one of the drivers for continuous policy
development and scientific research related to the health effects of EMF. Surveys show
that even if the public is more concerned about chemicals, food, air and water quality,
around half of EU public is also seriously concerned about the potential health risks of
EMF. The public opinion is evenly divided between those who are very much or fairly
concerned (46%) and those who are not very concerned or not at all concerned
(51%)70.
Thus, despite the existing EU regulatory framework which is based on the
precautionary principle and the absence of conclusive scientific evidence on the
potential health effects of exposure to EMF, public concern about the potential health
risks from EMF persists. In particular, surveys show that wireless communication
technology and the construction of base stations near homes seem to be the main
sources of worry. As a result, the construction of new power and distribution lines or
mobile communication networks face significant public opposition. Some categories of
population (e.g. parents of young children) are particularly worried and demand risk-
benefit assessments.
It is difficult to ascertain the reasons for the concern about EMF but the following
factors should be considered in explaining the significant growth of public concern:
Unfamiliar technology: Advancements in “smart” technology and
telecommunications (WiFi, DECT phones, GPS systems, etc.) could mean that
more visible structures that produce EMF are being constructed. The
ubiquitous and invisible presence of EMF and their mysterious nature favour
psychological stress caused by unfamiliar objects and technologies.
Lack of control: many concerned citizens feel helpless in controlling their
exposure levels to EMF or in determining where base stations or power lines
should be constructed, which has expressed through numerous organised
actions from citizens groups. Groups of citizens that identify as being electro-
hypersensitive are also making their voices heard by taking legal action against
various actors causing EMF exposure (e.g. resistance to the installation of new
power lines and mobile phone base stations as well as against WiFi hotspots in
schools and libraries).
70
EC 2010, Special Eurobarometer – Electromagnetic fields. ec.europa.eu/public_opinion/archives/ebs/ebs_347_en.pdf [Accessed online 16/08/2010]
32 Promoting healthy environments: Electromagnetic fields
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Complexity of the issue and scientific controversies: the understanding of
measurement procedures and quantification of exposure are particularly
difficult to understand by the general public. The potential effects of a multi-
exposure are also very complex to ascertain. Moreover, the results of scientific
studies that sometimes appear to be contradictory, coupled with the lack of
conclusiveness of many studies, trigger endless scientific debates. Facing such
controversies, the public cannot decide to forget the risk and get free from
associated responsibility nor decide to challenge it. Such situation is
exacerbated when the risk relates to severe disease, such as cancer, or specific
groups such as children.
A possible approach to understand public perception is based on risk-benefit analyses
that are more or less consciously performed by each individual. Schematically, such
individual risk-benefit analyses drive one to reject an individual risk if it is not
counterbalanced by an individual benefit. Even a very low or poorly demonstrated risk
will require a compensating advantage. Interestingly, a collective benefit, such as
access to technology, does not compensate for an extra individual risk. On the
contrary, it may trigger the feeling that “others benefit from the risk that I take”. For
example, if someone thinks “the fact that the base station is close to my house
increases the risk for me”, he or she will need to perceive a compensating benefit for
him or herself, and not only for the neighbourhood, in order to accept the risk. Thus,
he or she will request that in the absence of benefit, the risk is cancelled (request for
policy based on precaution principle) or its absence demonstrated (request for more
information). Of course, this schematic analysis is modulated by the cultural context
which may vary across different MS.
Under this scheme, another possible request (in theory) would be to associate an
increased individual benefit or compensation (perceived or real) to the increase of
individual risk (perceived or real). It is also possible to reduce the concern by
associating the risk exposed individuals to the decision that creates the risk: it is
difficult to take risks resulting from others’ decision whereas dialog and stakeholder
consultation may allow better acceptance. Communication is an obvious necessity to
answer public concern in a situation of uncertainty (see chapter 3 and 4). These
mechanisms explain the different attitudes concerning exposure to mobile phones,
which provides an individual benefit and can be individually controlled, and exposure
to a base station which provides a collective benefit and cannot be individually
controlled. Answers to public concerns about individual phones are easier to
implement than those related to collective equipment.
The tables below summarise the risk acceptance of collective equipment, such as base
stations (Table 3-1), and individual equipment such as mobile phones (Table 3-2) by
individuals and the community, according to the risk and the benefit of these devices
for both individuals and the community.
August 2010 Promoting healthy environments: Electromagnetic fields 33
Table 3-1 : Risk acceptance for collective equipments
For individuals For the community
Risk In the best cases, very low or absent
In the best cases, very low or absent
Benefit None Present : access to technology
Risk/benefit Concern Acceptable
Table 3-2 : Risk acceptance for individual equipments
For individuals For the community
Risk In the best cases, very low or absent
In the best cases, very low or absent
Benefit Important Important: access to technology
Risk/benefit Acceptable Acceptable
The tables show that even if the risk is very low, if individuals perceive absolutely no
balancing benefit, they will not accept the risk: when the benefit is zero, the risk /
benefit ratio is always too high. In contrast, in the three other cases, some benefit is
present; therefore the risk / benefit ratio may be accepted.
The 2010 Eurobarometer survey highlighted that the majority of EU public would like
to receive more information through common media such as the TV, radio and press
releases, instead of needing to look for information on the internet and in specialised
publications. Only 20% of the respondents in the Member States have received
information on the potential health effects of EMF. Out of this percentage, 58% were
satisfied with the information (compared to 28% in 2006), but 15% considered the
information as not objective70. It is worth noting that people who are not satisfied with
the information provided are in general those who are the most concerned about the
EMF issue (56% versus 37%). In some MS, where a lot of attention has been attributed
to public consultation, authorities are more aware of specific areas of concern71. Thus
it emerges that high-tension power lines (35%), mobile phone base stations (33%),
mobile phone handsets (26%), computers (20%) and household electrical equipments
(17%) are the EMF sources that are perceived as having a significant impact on health.
These percentages decreased with two or three points over the past four years, except
the percentages for computers and household electrical equipments which increased.
The awareness of existing sources of EMF has decreased. In 2006, 23% of the
respondents identified all the items proposed in the survey to emit EMFs whereas only
9% were aware of this fact in 2010. Persons with a higher level of education are
significantly more aware of the fact that each of the sources mentioned generates
electromagnetic fields70.
The majority of the European citizens (58%) do not consider national public authorities
to be efficient enough in protecting them from potential health risks linked to EMF.
48% of the respondents would like the European Union to inform them on the
71
EC 2008, Second Implementation Report 2002-2007 on the Application of the Council Recommendation (1999/519/EC) on the limitation of the exposure of the general public to electromagnetic fields. www.ec.europa.eu/health/ph_risk/documents/risk_rd03_en.pdf [accessed 11/03/2010]
34 Promoting healthy environments: Electromagnetic fields
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potential health risks of EMF. Respondents think that the EU should develop standards
for products (39%) and guidance to protect public health (36%)70.
The reliability of scientific experts is also sometimes debated, as in the case of Sweden,
where many people are worried and suspect that the opinions of experts and scientists
should not be trusted, that they are either scientifically unjustified or that experts are
paid by industry to say what they say72.
Interestingly, in the Swedish population, personal risks (the risks people pose to
themselves) are typically considered to be smaller than general risks (risks posed to
others) for both mobile phones and transmission lines. This shows that people believe
they can protect themselves against EMF but they do not believe that others can or
want to protect themselves to the same extent (Figure 3-1).
Figure 3-1 : Distribution of risk ratings for mobile telephones (A) and transmission lines (B)72
3.2. CURRENT EU APPROACH
In the early 1990s, the knowledge of health effects at very high levels of exposure
coupled with the fast development of wireless technologies, prompted policy makers
to develop a precautionary framework for electromagnetic fields. Remaining
uncertainties regarding the health effects of EMF also led to financing scientific
research on the subject. However, this has failed to reduce citizen concern about
exposure to EMF.
72
JRC/EMF-NET. Electromagnetic Field Exposure: Risk Communication in the context of Uncertainty, Pages 35-44: Sjöberg L. EMF Hazards and Principles of Risk Perception. www.web.jrc.ec.europa.eu/emf-net/doc/pubblications/Book_Risk%20communication.pdf [accessed 11/03/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 35
3.2.1. EU POLICY AND LEGAL FRAMEWORK
3.2.1.1 EU regulatory framework
The general framework for EU legislation on products and devices emitting EMF is
provided by the Council Recommendation 1999/519/EC73. The Recommendation fixes
restrictions and reference levels for the exposure of the general public to EMF, based
on the best available scientific evidence, and provides a basis for monitoring the
situation. These restrictions and reference levels are based on the International
Commission on Non Ionising Radiation Protection (ICNIRP) guidelines74 and include a
safety factor of 50 for the general public, resulting from the application of a factor 5,
corresponding to the reduction of public exposure values compared to those applicable
to occupational exposure, and a factor of 10 to cover variations of sensitivity and
exposure conditions in the whole frequency range.
The Recommendation incites Member States to promote research into the possible
health impacts of EMF, to review regularly the exposure limits in the light of new
research results and to keep the public informed of the risks and the measures being
taken to address them69. In 2000, through a questionnaire, all Member States notified
the Commission of having implemented the provisions of the Council
Recommendation. In 2009 a new questionnaire was sent to the 27 Member States to
update the report of the implementation of the Recommendation9.
The framework proposed by the recommendation was used to develop EU legislation
and safety requirements that are necessary for all products emitting EMF. As a result,
harmonised framework is in place in the EU to limit EMF exposure.
3.2.1.2 EU legal instruments
Directive 2004/40/EC on the minimum health and safety requirements regarding the
exposure of workers to the risks arising from physical agents (EMF), defines thresholds
to protect all workers from adverse effects of EMF with frequencies from 0 Hz to
300 GHz. The exposure limits are expressed in terms of intensity of current flowing
through the human body and set to protect against acute effects of exposure in the
nervous system. Nevertheless this Directive does not consider the use of EMF in
medicine and particularly in MRI whereas the static field, the gradient field, and the RF
field are encompassed in the Directive. Within the limits set by the Directive, doctors
and nurses who are close to the MRI while scanning is taking place are exposed at
levels substantially above the exposure limits. The consequence of this Directive is to
make it illegal for any worker to work in close proximity to MRI. However there is
absolutely no evidence that the exposure to EMF from an MRI system is more
dangerous for patients than the x-rays that are scattered from a scanner thus the
73
Council recommendation of 12 July 1999 on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz) 74
International Commission on Non-Ionizing Radiation Protection. ICNIRP Guidelines, Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz). 1998
36 Promoting healthy environments: Electromagnetic fields
August 2010
efficiency, benefits to patients and risks to patients and staff of MRI must be
considered to define exposure limits. Therefore, in most EU Member States, scientific
institutions and societies in the field of imaging and health have requested a
postponement of the implementation of the Directive into national law, originally
forecasted for 2008 and deferred until 2012, as well as an amendment of this Directive
to take into account the characteristics and benefits of MRI75.
Directive 1999/5/EC76 on radio equipment and telecommunications terminal
equipment (R&TTE) and the mutual recognition of their conformity, defines the rules
for the placing on the market and putting into service of Radio and
Telecommunications Terminal Equipment. It ensures free movement of radio
equipment and terminals, guarantees they are safe and do not disturb existing radio
services or other equipment, and protects from the health effects of radio waves.
This Directive attempts to introduce innovative products on the market and thus
induces a sustainable competitiveness of the EU radio and telecommunications
industries.
Directive 2006/95/EC77 is focused on the harmonisation of the laws of Member States
relating to electrical equipment designed for use within certain voltage limits. This
Directive, also called the Low Voltage Directive (LVD), defines a conformity assessment
procedure for the EMF emissions of products before placing them on the market, and
defines Essential Health and Safety Requirements which such equipment must meet,
either directly or by means of harmonised standards. Directive 2004/108/EC78 is
focused on the Member States’ implementation of the rules on electromagnetic
compatibility (EMC). The EMC Directive limits electromagnetic emissions of equipment
in order to ensure that such equipment does not disturb radio and telecommunication
as well as other equipment and reciprocally the Directive also governs the immunity of
such equipment to interference and seeks to ensure that this equipment is not
disturbed by radio emissions79. The EMC Directive does not regulate the safety of
equipment in respect of people, domestic animals or property but is only concerned
with the electromagnetic compatibility of equipment.
75
Hill DLG., Mcleish K., Keevil SF. Impact of Electromagnetic Field Exposure Limits in Europe: Is the Future of Interventional MRI Safe? Acad Radiol. 2005; 12(9): 1135-1142 76
Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity 77
Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits 78
Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC 79
EC – Enterprise and Industry – Electrical Engineering. Electromagnetic Compatibility (EMC): ec.europa.eu/enterprise/sectors/electrical/emc/index_en.htm [Accessed online 08/03/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 37
3.2.1.3 Policy actions
In June 2003, the Commission adopted the European Environment & Health Strategy
to reduce the disease burden caused by environmental factors in the EU, to identify
and to prevent new health threats caused by these environmental factors and to
strengthen EU capacity for policymaking in this area80. In June 2004 the Strategy was
followed up by the European Environment and Health Action Plan81, covering the
period of 2004-2010, which includes action on exposure to EMF and was based on
extensive consultations with experts and stakeholders from the environment, health
and research sectors. The aims are to improve the information chain and the
cooperation between actors in the environment, health and research fields, to fill the
knowledge gap by strengthening research on environment and health and identifying
emerging issues, to review risk reduction policies71.
The European Parliament resolution of 2 April 200982 on health concerns associated
with electromagnetic fields (2008/2211(INI) supports the consideration of biological
effects and the review of the scientific basis and adequacy of the EMF limits of the
Recommendation 1999/519/EC. The aim of this is to reduce the exposure levels to
EMF.
3.2.1.4 EU technical standards
In order to conform to the EU legislation on EMF, several standards have been
established to demonstrate compliance with the EU EMF emission requirements and to
specify limits of exposure and test and measurement methodologies (Table 3-3).
Standards cover the whole spectrum of EMF frequencies and limit both the exposure
of the general public and workers. Some of these standards fall under the Directives
mentioned above on radio and telecoms equipment (Directive 1999/5) and the Low
Voltage Directive (2006/95).
Harmonised standards play an important role in the operation of the corresponding
Directive. Products, which are conformed to harmonised standards, are presumed to
comply with the corresponding Directive. When manufacturers do not use harmonised
standards, they should demonstrate how they respect the essential requirements of
the associated Directive83.
80
European Commission – Environment: ec.europa.eu/environment/health/index_en.htm [Accessed online 12/10/2010] 81
Document available at : www.eu-humanbiomonitoring.org/doc/actionplan.pdf [Accessed online 12/10/2010] 82
European Parliament resolution of 2 April 2009 on health concerns associated with electromagnetic fields (2008/2211(INI)) 83
EC, Enterprise and industry - Radio and telecommunications terminal equipment. Harmonised standards under Directive 1999/5/EC: ec.europa.eu/enterprise/sectors/rtte/documents/standards/index_en.htm [Accessed online 09/03/2010]
38 Promoting healthy environments: Electromagnetic fields
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Table 3-3: European standards relating to EMF requirements85
European standard Specifications
EN 50366:2003 Household and Similar Electrical Appliances—Electromagnetic Fields—Methods for Evaluation and Measurement; limits the electromagnetic fields produced by electrical household appliances in order to protect human beings, animals and plants. This standard is listed under the LVD Directive.
EN 50360:2001 Product Standard to Demonstrate the Compliance of Mobile Phones with the Basic Restrictions Related to Human Exposure to Electromagnetic Fields (300 MHz–3 GHz). This standard has been in force under the R&TTE Directive.
EN 50371:2002 Generic Standard to Demonstrate the Compliance of Low-Power Electronic and Electrical Apparatus with the Basic Restrictions Related to Human Exposure to Electromagnetic Fields (10 MHz–300 GHz). This standard is listed under both the LVD and the R&TTE Directive.
EN 50364: 2001 Limitation of Human Exposure to Electromagnetic Fields from Devices Operating in the Frequency Range 0 Hz–10 GHz, Used in Electronic Article Surveillance (EAS), Radio-Frequency Identification (RFID), and Similar Applications. This standard appears under the LVD and under the R&TTE Directive.
EN 50385:2002. Product Standard to Demonstrate the Compliance of Radio Base Stations and Fixed Terminal Stations for Wireless Telecommunication Systems with the Basic Restrictions or the Reference Levels Related to Human Exposure to Radio-Frequency Electromagnetic Fields (110 MHz–40 GHz). This standard is listed only under the R&TTE Directive.
EN 50444:2008 Basic standard for the evaluation of human exposure to electromagnetic fields from equipment for arc welding and allied processes. This standard is listed under the R&TTE Directive.
EN 50401:2006 Product standard to demonstrate the compliance of fixed equipment for radio transmission (110 MHz - 40 GHz) intended for use in wireless telecommunication networks with the basic restrictions or the reference levels related to general public exposure to radio frequency electromagnetic fields, when put into service. This standard is listed under the R&TTE Directive.
However, innovative products tend to employ new RF transmitter technologies, which
often mean a lag in the development of appropriate standards and measurement
techniques. For example, there are still no published standards for measurement
methods of the absorption rate of EMF by the body to be used on 5.2–5.8 GHz cordless
phones and wireless devices used in close proximity to the human body. IEC 66209-2 is
under development and is expected to fill this gap when published85.
August 2010 Promoting healthy environments: Electromagnetic fields 39
3.2.1.5 Merits and limitations of the current EU regulatory framework
With regards to the basic restrictions and reference levels, Council Recommendation
1999/519/EC ensures that the public is protected against both acute and long-term
effects of EMF. Basic restrictions of the Recommendation include a large safety factor
(50) which takes into account potentially more fragile members of the population, such
as children, pregnant women, elderly and sick people84. Moreover as required by the
Council Recommendation, the Commission has to review continuously the validity of
the proposed limits, which it does periodically through the SCENIHR. Thus ongoing
research is taken into account in the elaboration of exposure limits and the framework
proposed by the Recommendation is still valid.
The European legislation on EMF, including the R&TTE Directive and the LVD, requires
producers and distributors to put safe products on the market and into service. These
Directives mandate essential requirements for the protection of the health and safety
of users and the general public. The LVD requires that users of household electrical
equipment be protected from the possible harmful effects of EMF that may arise from
RF transmitters or from the EMF associated with high currents and ferromagnetic
applications85. European manufacturers of electrical and electronic equipment agree to
comply voluntarily with the EMF exposure limits set in the Council Recommendation
1999/519 for all their devices86.
Directive 2004/40/EC defines 10 kV/m as the highest value of an electric field in a 50 Hz
occupational environment. However, in the ICNIRP guidelines this limit is doubled
when workers are not in contact with electrical grounds because the limit here is based
on avoiding spark discharges rather than induced current intensity limit. Therefore, the
threshold of the Directive is very low and the compliance with the limits of Directive
2004/40/EC for the intensity of induced currents seems impossible to test in every
workplace because of the time and budget needed87.
In addition, the basic problems related to calculating workers’ exposure levels are
related to defining realistic representations of the workers’ postures; of the electrical
grounding conditions at the workplace; of realistic impedance of near-field produced
by, e.g., electro-surgery or welding devices; and of dynamic changes in EMF levels in
the course of application. Proper calculations in assessing exposure require advanced
skills, specialised software, and can be both very time-consuming and expensive.
Validation and verification of the skills of personnel who carry out the calculations are
also necessary87.
84
Lambrozo J., Souques M., Magne I. Champs magnétiques de très basses fréquences 50-60 Hz : quelles valeurs limites d’exposition retenir ? Environnement, Risques & Santé. 2008, 7(3) :181-189 85
Zombolas, C. Functional Safety: Understanding the New EMF and EMC Requirements. Available at: www.ce-mag.com/archive/06/ARG/zombolas.htm [Accessed online 08/03/2010] 86
Orgalime European approach to the protection of public health applied to the exposure of the general public to electromagnetic fields (EMF) – Orgalime position paper. 04/10/2000 87
Mild KH., Alanko T., Decat G., et al. Exposure of Workers to Electromagnetic Fields. A review of open questions on exposure assessment techniques. International Journal of Occupational Safety and Ergonomics (JOSE) 2009, 15(1): 3–33
40 Promoting healthy environments: Electromagnetic fields
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The precautionary principle (PP) is a tool for policy-makers to manage risks in the case
of scientific uncertainties about the existence or magnitude of a risk. The PP is adopted
into European policy actions on EMF only through exposure standards, regular review
of safety recommendations, support of the research to consider possible health effects
of EMF, etc88 so that policy makers are not forced into critical decisions on human
health protection in cases where scientific evidence is insufficient but perception of
risk is strong89. The PP can be used in risk management to anticipate, prevent harm,
and to react before the risk is established88. Therefore, three components are included
in the PP: hazards, uncertainties concerning the hazards, and the possibility to act88.
In the context of EMF, two approaches are possible in which the level of scientific
evidence needed to trigger protective actions is not the same. On the one hand, policy
makers can consider that no health hazard has been established, thus the application
additional precautionary actions is not justified88. In fact, the Council Recommendation
can already be interpreted as consistent with the Precautionary Principle, since they
contain a significant level of precaution based on the current knowledge, i.e. a safety
factor of 50.
On the other hand, as uncertainties exist, in addition to the application of Council
Recommendations, further precautionary actions can be taken88. In both cases, ethical
considerations and value judgments of policy-makers play a role90. Additional
precautionary actions can be taken only in dichotomous situations, or see as the
implementation of a basic principle which can be applied in every policy action90.
Table 3-4 compares the consideration of different criteria (PP, subpopulations, etc.) in
the main policy actions.
Table 3-4 : Comparative table of the main policy actions
Criteria Recommendation 1999/519
Directive 2004/40
Directive 1999/5
Directive 2006/95
Directive 2004/108
Risk reduction Yes Yes Yes Yes No
Consideration of subpopulations
Yes All workers without others subgroups
No No No
Respect to the precautionary principle
Yes Yes Yes Yes Not relevant
Response to a public concern
Yes Yes Yes Yes No
88
Dolan M., Rowley J. The precautionary principle in the context of mobile phone and base station radiofrequency exposures. Environmental Health Perspectives. 2009;117 (9):1329-1332 89
Rapporteur report - Application of the Precautionary Principle to Electromagnetic Fields (EMF) – Conference of 24-26 February 2003 in Luxembourg: www.who.int/peh-emf/meetings/en/Lux_final_rapp_report.pdf 90
Kundi M., Hardell L., Sage C., et al. Electromagnetic fields and the precautionary principle. Environ Health Perspect. 2009; 117(11): A484–A485
August 2010 Promoting healthy environments: Electromagnetic fields 41
As seen in Table 3-4, almost all the policy actions take into account the precautionary
principle except Directive 2004/108, which is a technical regulation on the
electromagnetic compatibility of equipment that does not concern human health.
3.2.2. SCIENTIFIC ACTIONS
Different types of scientific action (research projects, scientific committees, scientific
projects, workshops and conferences), each having different objectives, have been
performed at the European level.
3.2.2.1 Research projects
The main EU research projects include:
COST (European Cooperation in the Field of Scientific and Technical Research) is a
framework for international research and development cooperation, allowing the
coordination of national research at European level but not providing funding.
Different actions are conducted and the more recent project is COST BM0704 (2008-
2012) which allows a better understanding of health impacts of EMF, of new
characteristics of emerging technologies and of the tools of risks communication and
management91.
The Interphone Study (1999-2005) was a case control study assessing whether RF
exposure from mobile telephones is associated with an increased risk of brain tumours,
acoustic neurinoma and parotid gland tumours in relation to RF exposure. The study is
funded by EU FP5, the International Agency for Research on Cancer (IARC) and nine EU
Member States68.
The Reflex project (2000-2004) studied in vitro the impact of ELF fields and RF on DNA
and cells development. While results of Reflex project do not prove hazards from EMF,
they indicate promising lines of investigation for further work92.
The Cemfec project (2000-2004) looked at if EMF (particularly from mobile phones)
increase the genotoxicity of known cancer-causing chemicals that can be found in
drinking water in small amounts. The study found that RF did not enhance the
development of cancer93.
91
COST – European cooperation in science and technology website: www.cost.esf.org/ [Accessed online 19/03/2010] 92
EU Research on Environment and Health – Results from projects funded by the Fifth Framework Program. The REFLEX Project: Risk evaluation of potential environmental hazards from low energy electromagnetic fields (emf) exposure using sensitive in vitro methods: ec.europa.eu/research/environment/pdf/env_health_projects/electromagnetic_fields/e-reflex.pdf 93
CEMFEC - Combined Effects of Electromagnetic Fields with Environmental Carcinogens website: www.uku.fi/cemfec/ [Accessed online 12/03/2010]
42 Promoting healthy environments: Electromagnetic fields
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The Ramp 2001 project (2002-2005) studied the possible biological effects of RF on
brain and nerve cells to identify the molecular mechanisms through which the nervous
system could be impaired by EMF94.
The Guard project (2002-2004) assessed potential effects in auditory function as a
consequence of long-term exposure to RF produced by GSM cellular phones,
performing studies on both animal models and humans95.
The Perform-A project (2000-2005) led by the Fraunhofer Institute for Applied Science
from Germany used in vivo experiments to determine if mobile phones frequency
cause cancer or promote the spread of pre-existing tumours68.
Research on potential health effects induced by EMF has been proposed by the
Commission to continue in the Seventh Framework Programme (FP7) that will run
from 2007 to 201396. This include MOBIKIDS (2009-2014) which is a collaborative
project under EU FP7 that aims to assess the potential carcinogenic effects of
childhood and adolescent exposure to RF from mobile phones on the central nervous
system, in particular brain tumours97.
3.2.2.2 Scientific advice
Scientific advice to policy makers can be provided through scientific committees and
scientific projects.
Scientific Committees review periodically the evidence on the health effects on EMF.
The Scientific Committee for Emerging and Newly Identified Health Risks (SCENIHR)
was created to provide opinions on questions concerning emerging or newly identified
health and environmental risks. One of the goals is to periodically review the available
scientific evidence on the potential health effects of EMF to ensure that the
Recommendation 1999/519/EC is based on the most up-to-date knowledge,
concerning the possible effects of EMF and the exposure limits98. The Commission uses
scientific knowledge to revise basic restrictions and reference levels. In addition, the
SCENIHR identified gaps in the relevant scientific knowledge and priority areas where
further research is needed, indicating to Member States and the Commission which
areas should be prioritised for financing through the Framework Programme (FP)9.
94
EU Research on Environment and Health – Results from projects funded by the Fifth Framework Program. The Ramp 2001 Project: Risk assessment for exposure of nervous system cells to mobile telephone EMF: from in vitro to in vivo studies: ec.europa.eu/research/environment/pdf/env_health_projects/electromagnetic_fields/e-ramp2001.pdf [Accessed online 12/03/2010] 95
Guard website – potential adverse effects of GSM cellular phones on hearing 2002-2004: www.guard.polimi.it/home/home.html [Accessed online 12/03/2010] 96
European Commission – Research - What is FP7? The basics: ec.europa.eu/research/fp7/understanding/fp7inbrief/what-is_en.html [Accessed online 12/03/2010] 97
European Commission – Research – Environment - MOBI-KIDS: a follow-up study to the INTERPHONE study to be launched by the EU: ec.europa.eu/research/environment/newsanddoc/article_4090_en.htm [Accessed online 12/03/2010] 98
Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR). Health Effects of Exposure to EMF. 2009
August 2010 Promoting healthy environments: Electromagnetic fields 43
Before the SCHENIHR and with the same objectives, the Scientific Committee on
Toxicity, Ecotoxicity and the Environment Translations (CSTEE) reviewed in 2001 the
possible effects of EMF, RF and microwave radiation on human health.
In addition, the European Commission finances many scientific projects to improve
knowledge on health impacts of EMF and risk management. EU scientific projects in
the area of EMF have been strongly focused on the potential link between health
effects and EMF exposure, with a particular attention to RF fields caused by mobile
phones. Examples of EU financed scientific studies include:
EMF-NET (FP6) (2002-2006): is a large coordinated action financed under the
6th Framework programme that aims to collect and evaluate the results on
EMF health effects, considering also the potential risks related to occupational
exposure and to set appropriate safety standards. The majority of these
research projects focus on EMF from mobile telephones and are cancer-
related, and a smaller number investigate possible effects on hearing, memory
and behaviour99. EMF-NET provides advice to the European Commission on
new research results and their relevance to public health and safety issues and
contributes to information activities for the general public.
Since 2004, EMF-NET have organised nearly 30 events (workshops, meetings,
round tables, seminars, etc.) on health effects of EMF, potential sensitive sub-
groups of population and exposure levels.
EFRHAN (2009-2012): follows EMF-NET and will establish a network to allow
the health risk assessment of EMF exposure. This project uses the risk analysis
of EMF-NET and will provide information for risk management of EMF100.
3.2.2.3 Workshops and conferences
Workshops of experts are established to improve the exchange of information and
identify ways of improving coordination and cooperation between Member States. In
September 2005 for example, a workshop organised by the Central Institute for Labour
Protection – National Research Institute (CIOP-PIB) took place in Poland, where the aim
was the review of knowledge related to EMF hazards from occupational exposure and
methods of electromagnetic risk evaluation and reduction101. Certain workshops are
organised to review EMF guidelines, for instance in 2007 in the ICNIRP International
EMF Dosimetry Workshop, scientists assessed the existing guidelines and highlighted
weaknesses of European regulation102. Every two years, an international workshop on
biological effects of EMF is organised; the last (the 5th) took place in 2008 in Sicily
where researchers, engineers, public authorities, ecologists, public health workers,
industrials, etc. share their information on EMF and discussed about research,
99
EMF-NET website: web.jrc.ec.europa.eu/emf-net/ [Accessed online 10/03/2010] 100
EFHRAN - European health risk assessment network on EMF exposure website: efhran.polimi.it/ [Accessed online 19/03/2010] 101
CIOP-PIB website: www.ciop.pl/10522.html [Accessed online 19/03/2010] 102
Roy CR. Rapporteur report : Icnirp international workshop on EMF dosimetry and biophysical aspects relevant to setting exposure guidelines. Health physics. 2007;92(6):658-667
44 Promoting healthy environments: Electromagnetic fields
August 2010
experimental results, modelling and simulation, policy, safety and standardisation,
etc103.
In 2009, the organisation of an international scientific conference on EMF and health
was proposed to discuss the remaining questions and to lead to a strengthened
scientific consensus on future actions108. Some conferences have already been
organised, such as the International Conference on Electromagnetic Fields, Health and
Environment (EHE’09) where medical and technical researchers and authorities of the
WHO and the ICNIRP brought together to discuss about the impact of EMF on health
and environment104.
Table 3-5 shows a summary of scientific European actions. This analysis will take into
consideration the usefulness of the scientific framework for policy makers.
103
5th International Workshop on Biological Effects of Electromagnetic Fields website: xoomer.virgilio.it/5internatwshopbioeffemf/ [Accessed online 19/03/2010] 104
Abricem - International Conference on Electromagnetic Fields, Health and Environment – EHE: www.abricem2.com.br/web3/index.php?option=com_content&view=article&id=46&Itemid=292 [Accessed online 19/03/2010]
May
20
10
P
rom
oti
ng
he
alth
y e
nvi
ron
me
nts
: El
ect
rom
agn
eti
c fi
eld
s 4
5
Tab
le 3
-5 :
Co
mp
arat
ive
tab
les
of
scie
nti
fic
Euro
pea
n a
ctio
ns
Scie
nti
fic
init
iati
ve
Typ
e o
f d
ata
P
ub
licat
ion
s C
olla
bo
rati
on
s
C
om
mu
nic
atio
n t
o t
he
ge
ne
ral p
ub
lic (
exa
mp
les)
In
tere
st f
or
the
p
olic
y m
ake
rs
Co
ntr
ibu
tio
n t
o a
n h
igh
er
pro
tect
ion
leve
l
RES
EAR
CH
PR
OJE
CTS
CO
ST
BM
07
04
In
vit
ro, i
n
vivo
, ep
idem
iolo
gic
al s
tud
ies
(EM
F in
ge
ne
ral)
5 w
ork
sho
ps
sch
ed
ule
d
40
rep
ort
s 2
pu
blic
atio
ns
of
acti
on
m
emb
ers
on
sp
ecia
lise
d
jou
rnal
s
27
co
un
trie
s
New
slet
ter
avai
lab
le o
n t
he
pro
ject
web
site
: ww
w.c
ost
-b
m0
70
4.e
u/
(sec
tio
n
Pu
blic
atio
ns
– A
ctio
n
New
slet
ter)
On
e o
bje
ctiv
e is
to
pro
vid
e a
scie
nti
fic
eval
uat
ion
of
the
avai
lab
le d
ata
for
dec
isio
n m
ake
rs
invo
lved
in r
isk
man
agem
ent
of
EMF
Exp
osu
re le
vels
of
peo
ple
are
q
uan
tifi
ed b
ut
the
mai
n
ob
ject
ive
of
this
pro
ject
is t
he
shar
ing
of
kno
wle
dge
on
hea
lth
ef
fect
s
MO
BIK
IDS
Epid
emio
logi
cal
stu
dy
(co
mm
un
icat
io
n
tech
no
logi
es
[RF]
)
No
t ye
t av
aila
ble
1
8 s
cien
tifi
c p
artn
ers
1
art
icle
in p
ress
Th
is s
tud
y w
ill
pro
vid
e sc
ien
tifi
c su
pp
ort
fo
r th
e d
ecis
ion
s o
f p
ub
lic h
ealt
h
po
licy
Pro
tect
ion
of
ado
lesc
ents
Inte
rph
on
e
Stu
dy
Epid
emio
logi
cal
stu
dy
(RF)
2
2 p
ub
licat
ion
s in
sp
ecia
lised
jou
rnal
s 8
co
un
trie
s in
volv
ed
Man
y m
edia
s C
on
clu
sio
ns
con
cern
ing
mo
bile
te
lep
ho
nes
co
uld
b
e u
sed
in
regu
lati
on
s
The
occ
urr
ence
of
can
cers
of
the
hea
d a
nd
nec
k w
as
mo
nit
ore
d.
Re
fle
x p
roje
ct
In v
itro
st
ud
ies
(ELF
, R
F)
No
t fo
un
d
12
par
tner
s N
ot
fou
nd
Th
e re
sult
s w
ill
hav
e to
be
com
ple
men
ted
by
wh
ole
an
imal
st
ud
ies
bef
ore
th
e re
sult
s ar
e u
sed
b
y p
olic
y m
aker
s
The
ove
rall
aim
was
to
fin
d t
he
bio
logi
cal p
roce
sse
s at
cel
lula
r an
d m
ole
cula
r le
vel t
o e
xpla
in
hea
lth
eff
ects
, hu
man
exp
osu
re
has
no
t b
een
stu
die
d.
46
P
rom
oti
ng
he
alth
y e
nvi
ron
me
nts
: El
ect
rom
agn
eti
c fi
eld
s M
ay 2
01
0
Scie
nti
fic
init
iati
ve
Typ
e o
f d
ata
P
ub
licat
ion
s C
olla
bo
rati
on
s
C
om
mu
nic
atio
n t
o t
he
ge
ne
ral p
ub
lic (
exa
mp
les)
In
tere
st f
or
the
p
olic
y m
ake
rs
Co
ntr
ibu
tio
n t
o a
n h
igh
er
pro
tect
ion
leve
l
CEM
FEC
In
viv
o a
nd
in
vitr
o s
tud
ies
Two
pu
blic
atio
ns
in
spec
ialis
ed jo
urn
als
5 p
artn
ers
fro
m u
niv
ers
itie
s an
d
rese
arch
inst
itu
tes
No
t fo
un
d
Res
ult
s u
sed
by
inte
rnat
ion
al
bo
die
s su
ch a
s th
e IA
RC
an
d t
he
WH
O f
or
the
hea
lth
ris
k as
sess
men
t o
f R
F.
Thes
e ev
alu
atio
ns
form
ed t
he
scie
nti
fic
bas
is f
or
po
ssib
le
revi
sio
ns
of
RF
exp
osu
re li
mit
s to
red
uce
har
mfu
l eff
ects
105 .
Ram
p 2
00
1
pro
ject
106
In v
ivo
an
d in
vi
tro
stu
die
s (R
F)
No
t fo
un
d
No
t fo
un
d
No
t fo
un
d
The
resu
lts
pro
vid
ed r
esea
rch
su
pp
ort
fo
r EU
p
ub
lic h
ealt
h
po
licie
s So
me
of
the
exp
erim
en
tal
pro
toco
ls
dev
elo
pe
d c
ou
ld
be
ado
pte
d b
y n
atio
nal
hea
lth
ca
re s
ervi
ces
as
refe
ren
ce
met
ho
ds
for
asse
ssin
g b
iolo
gica
l su
sce
pti
bili
ty t
o
RF
exp
osu
re a
nd
p
ote
nti
al h
ealt
h
risk
s
The
resu
lts
wer
e u
sed
to
ev
alu
ate
the
effe
cts
of
the
exp
osu
re
105 E
U R
esea
rch
on
En
viro
nm
ent
and
Hea
lth
– R
esu
lts
fro
m p
roje
cts
fun
de
d b
y th
e F
ifth
Fra
mew
ork
Pro
gram
. Th
e C
EMFE
C P
roje
ct:
Co
mb
ine
d e
ffec
ts o
f el
ectr
om
agn
etic
fie
lds
wit
h
envi
ron
me
nta
l car
cin
oge
ns:
ec.
eu
rop
a.eu
/res
earc
h/e
nvi
ron
men
t/p
df/
env_
hea
lth
_p
roje
cts/
elec
tro
mag
net
ic_f
ield
s/e-
cem
fec.
pd
f 10
6 Th
e si
te o
f R
amp
20
01
pro
ject
(w
ww
.ram
pp
roje
ct.o
rg/)
is b
ein
g u
pd
ated
. Th
e an
alys
is o
f th
is p
roje
ct w
ill c
om
ple
te la
ter
May
20
10
P
rom
oti
ng
he
alth
y e
nvi
ron
me
nts
: El
ect
rom
agn
eti
c fi
eld
s 4
7
Scie
nti
fic
init
iati
ve
Typ
e o
f d
ata
P
ub
licat
ion
s C
olla
bo
rati
on
s
C
om
mu
nic
atio
n t
o t
he
ge
ne
ral p
ub
lic (
exa
mp
les)
In
tere
st f
or
the
p
olic
y m
ake
rs
Co
ntr
ibu
tio
n t
o a
n h
igh
er
pro
tect
ion
leve
l
Gu
ard
pro
ject
In
viv
o a
nd
in
vitr
o s
tud
ies
(RF)
10
pu
blic
atio
ns
in
spec
ialis
ed jo
urn
als,
p
arti
cip
atio
n in
2
inte
rnat
ion
al c
on
fere
nce
s an
d 2
co
ngr
ess
9 p
arti
cip
ants
1
art
icle
in It
alia
n p
ress
fo
un
d
Pro
vid
e th
e ev
ide
nce
bas
e fo
r th
e d
evel
op
me
nt
of
envi
ron
men
tal
and
hea
lth
Eu
rop
ean
po
licy
mea
sure
s
This
pro
ject
was
est
ablis
hed
u
nd
er t
he
5th
fra
mew
ork
p
rogr
amm
e en
titl
ed
“Q
ual
ity
of
life
and
man
agem
en
t o
f liv
ing
reso
urc
es, k
ey a
ctio
n 4
: en
viro
nm
en
tal a
nd
hea
lth
”
Pe
rfo
rm-A
p
roje
ct
In v
ivo
st
ud
ies
(RF)
N
ot
fou
nd
6
par
tner
s N
ot
fou
nd
Th
e re
sult
s h
elp
th
e IA
RC
to
d
eter
min
e if
lon
g-te
rm e
xpo
sure
to
h
igh
-fre
qu
ency
EM
F p
rese
nt
a ca
rcin
oge
nic
ris
k
For
lon
g te
rm e
xpo
sure
SCIE
NTI
FIC
CO
MM
ITTE
ES
SCEN
HIR
R
evie
w o
f kn
ow
led
ge o
f st
atic
fie
lds,
EL
F, IF
an
d R
F u
sin
g in
viv
o,
in v
itro
, ep
idem
iolo
gic
al s
tud
ies
Rep
ort
s in
20
07
an
d 2
00
9
9 p
erso
ns
in t
he
wo
rkin
g gr
ou
p: 3
m
emb
ers
of
the
Scen
hir
an
d 6
sc
ien
tifi
c e
xper
ts c
om
ing
fro
m 6
co
un
trie
s
No
t fo
un
d
Po
licy
mak
ers
use
Sc
enh
ir’s
re
po
rts
to p
rep
are
po
licy
con
cern
ing
con
sum
er s
afet
y,
pu
blic
hea
lth
an
d
envi
ron
me
nt
Res
ult
s ar
e u
sed
to
rev
iew
bas
ic
rest
rict
ion
s an
d r
efer
en
ce
leve
ls
CST
EE
Rev
iew
of
kno
wle
dge
of
EMF,
RF
and
m
icro
wav
es
usi
ng
in v
ivo
, in
vit
ro,
epid
emio
logi
cal
stu
die
s
Rep
ort
in 2
00
1
10
per
son
s in
th
e w
ork
ing
gro
up
: 3
mem
ber
s o
f th
e C
STEE
, 4
exte
rnal
exp
ert
s an
d 3
Mem
ber
s o
f o
ther
sci
enti
fic
com
mit
tee
s o
f th
e C
om
mis
sio
n (
SCP
an
d S
CC
)
No
t fo
un
d
Po
licy
mak
ers
use
th
e co
ncl
usi
on
s o
f th
e C
STEE
to
ad
apt
the
regu
lati
on
s.
Res
ult
s ar
e u
sed
to
eva
luat
e if
th
e re
visi
on
of
the
exp
osu
re
limit
s (b
asic
res
tric
tio
ns
and
re
fere
nce
leve
ls)
of
Co
un
cil
Rec
om
men
dat
ion
19
99
/51
9/E
C
are
nec
essa
ry.
48
P
rom
oti
ng
he
alth
y e
nvi
ron
me
nts
: El
ect
rom
agn
eti
c fi
eld
s M
ay 2
01
0
Scie
nti
fic
init
iati
ve
Typ
e o
f d
ata
P
ub
licat
ion
s C
olla
bo
rati
on
s
C
om
mu
nic
atio
n t
o t
he
ge
ne
ral p
ub
lic (
exa
mp
les)
In
tere
st f
or
the
p
olic
y m
ake
rs
Co
ntr
ibu
tio
n t
o a
n h
igh
er
pro
tect
ion
leve
l
SCIE
NTI
FIC
PR
OJE
CTS
EMF-
NET
Exp
erim
en
tal
stu
die
s (E
LF,
IF, R
F,
inte
ract
ion
m
ech
anis
ms
and
med
ical
ap
plic
atio
ns)
an
d
epid
emio
logi
cal
stu
die
s
Ab
ou
t 4
0 r
ep
ort
s o
n n
ew
stu
die
s o
n b
iolo
gica
l ef
fect
s, m
ech
anic
s o
f ac
tio
n, e
pid
emio
logi
cal
stu
die
s, h
ealt
h p
olic
y an
d
man
agem
ent.
3
bo
oks
of
JRC
or
WH
O,
The
3 p
ub
licat
ion
s in
RTD
in
fo –
Mag
azin
e fo
r Eu
rop
ean
re
sear
ch
- C
oo
rdin
ato
rs o
f re
sear
ch
pro
ject
s (F
inla
nd
, Fra
nce
, G
erm
any,
Gre
ece,
Hu
nga
ry, I
taly
, U
K),
-
Rep
rese
nta
tive
s o
f C
OST
A
CTI
ON
28
1 a
nd
of
the
WH
O E
MF
pro
ject
, -
Ass
oci
atio
ns
of
Ind
us-
trie
s an
d
man
ufa
ctu
res,
of
scie
nti
fic
and
re
gula
tory
bo
die
s
9 a
rtic
les
in It
alia
n p
ress
, 1
in S
wed
ish
pre
ss a
nd
1 in
Sl
ove
nia
n p
ress
On
e ai
m o
f th
e p
roje
ct is
to
p
rovi
de
for
the
Euro
pea
n
Co
mm
issi
on
an
d
oth
er b
od
ies,
th
e ap
pro
pri
ate
info
rmat
ion
fo
r th
e fa
cilit
atio
n o
f p
olic
y d
evel
op
me
nt
op
tio
ns
The
resu
lts
are
use
d t
o d
efin
e ap
pro
pri
ate
safe
ty s
tan
dar
ds
EFR
HA
N
In v
itro
, in
vi
vo, a
nd
ep
idem
iolo
gic
al s
tud
ies
(on
EM
F in
ge
ne
ral)
No
t ye
t av
aila
ble
2
2 p
arti
cip
ants
(in
stit
ute
s o
f re
sear
ch, u
niv
ersi
ties
, as
soci
atio
ns)
No
t fo
un
d
Efrh
an w
ill
pro
vid
e a
hea
lth
ri
sk a
sses
smen
t p
roce
du
re h
elp
ing
po
licy
mak
ers
to
reac
t q
uic
kly
if
ther
e is
a p
rob
lem
w
ith
EM
F
The
mai
n a
im is
to
mo
nit
or
and
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49 Promoting healthy environments: Electromagnetic fields
May 2010
3.2.3. SCIENCE-POLICY INTERFACE
The management of this interface is particularly important in the case of public health
issues which are not completely understood by scientists. A number of gaps in the
scientific knowledge on EMF remain and Policy makers have to take decisions in
situations of uncertainty. However policy actions are not based only on scientific
evidence but they also take into account the social and cultural context. Consequently,
essential tools to support decision-making, such as risk assessment, may not be
sufficient107.
The importance of the science-policy interface for instance can be measured in relation
to public perception, in the case of mobile phone base stations. Despite the several
scientific assessments which consider that the current exposure to RF does not seem to
be dangerous, demands to revise exposure limits regularly occur. In the case of mobile
phones base stations the number of operator authorisations is then restricted by the
law due to public pressure on policy makers. Nevertheless, it has to be considered that
the decrease of exposure limits is difficult to implement because decreasing the power
of such installations would mean that additional base stations would be needed as
compensation. In addition, when the power of base stations is lower, the power of
mobile phones needed to establish connection is higher108. This contradiction can be
effectively resolved by science-policy interfaces.
Interactions with all the relevant stakeholders and the development of a properly
functioning science-policy interface are thus necessary (Table 3-6109).
Table 3-6 : Six potential ways of organising the science-policy interface109
Policy and science are diverging/ converging
Primacy of science No primacy/dialogue Primacy of policy
Diverging Science delivers ideas
Science delivers arguments
Science delivers data
Converging
Technocracy model (scientists have political power and technical knowledge)
Policy oriented learning model (societal debate)
Engineering model (contract research, social technology)
In several of the European sources of scientific advice quoted above (Scenihr, EMF-
NET, COST 281, etc.), a large EU network of scientists and experts reviews and
evaluates the emerging scientific evidence on possible health impacts from human
exposure to EMF. They provide policy relevant interpretation and advice for the
development of policy regulations. For example, EMF-NET compiled and analysed in a
107
Martuzzi M. Science, policy, and the protection of human health: A European perspective. Bioelectromagnetics. 2005;26(7):151-156 108
Bontoux L., Bromen K. Controlled exposure. Public Service Review: European Union - Medical science and research incorporating biotechnology, Issue 18. 2009 109
Riskbridge (Coordination Action on Building Robust, Integrative inter-Disciplinary Governance models for Emerging and Existing risks). Final report, 2009
50 Promoting healthy environments: Electromagnetic fields
August 2010
consistent way results of research projects to provide information, assistance and
answers to regulatory bodies and industries. In addition, it supports the development
of international standards for EMF exposure and provides reliable information about
EMF effects, in order to support decision-making by health, environmental and other
authorities110. Moreover, a specific project finalised in 2005, entitled EIS-EMF, was
developed to adapt the EMF-NET issues into risk communication for policy makers and
the public, and built a network of EU policy makers on EMF issues111.
In June 2003, the Commission adopted the European Environment & Health Strategy,
to reduce the disease burden caused by environmental factors in the EU, to identify
and to prevent new health threats caused by these environmental factors and to
strengthen EU capacity for policymaking in this area112. In June 2004 the Strategy was
followed up by the European Environment and Health Action Plan, covering the period
of 2004-2010, which includes action on EMF and was prepared through extensive
consultations with experts and stakeholders from the environment, health and
research sectors. This Plan gives the EU scientific information to reduce the adverse
health impacts of certain environmental factors and to endorse better cooperation
between actors in the environment, health and research fields. The aims are to
improve the information chain, to fill the knowledge gap by strengthening research on
environment and health and identifying emerging issues, to review risk reduction
policies71. For 2007-2010, workshops on targeted environment and health issues will
be organised to highlight the research results and to identify research needs for
proposals to be implemented in Community Programs.
The Strategy and the Action Plan have underlined the integration of human health
concerns into environmental policies and have highlighted the need for a coordinated
approach between scientists and policy makers.
The Commission has planned to continue to integrate environment and health
concerns and to involve many different actors in the policies. In order to strengthen EU
capacity for policymaking, the Commission will use the outcomes of research projects
and their translation into policy. However, the science-policy interface should be
improved by facilitating the transfer of research results to policy makers.
The science-policy interfaces promote exchange of knowledge between scientists and
policy makers and allow inter-disciplinary links. These interfaces can involve debates
about assumptions, choices and uncertainties, and about the limits of scientific
knowledge. They are tools for decision makers to understand the issues, exploring
110
EC, Research – Scientific Support for Policy. Environment and health - Healthy citizens in healthy surrounding, EMF-NET - Are electromagnetic fields hazardous to health?: ec.europa.eu/research/fp6/ssp/emf_net_en.htm [Accessed online 09/03/2010] 111
European Commission, Joint Research Center website, European Information System on Electromagnetic Fields Exposure and Health Impacts: web.jrc.ec.europa.eu/eis-emf/home.cfm [Accessed online 01/03/2010] 112
European Commission – Environment: ec.europa.eu/environment/health/index_en.htm [Accessed online 12/10/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 51
options for political action, and develop justifications. Moreover with these processes,
research priorities are suggested.
3.3. INITIATIVES IN MEMBER STATES
Regarding policy activities on the limitation of the exposure of the general public to
electromagnetic fields in the MS, the chosen approaches vary. Each MS is responsible
for providing adequate health protection for its citizens, and is free to decide how to
do so113.
The main objective of this section is to describe the differences in national actions
taken in the period 2004-2009, existing across European countries, at the policy,
scientific and science-policy interface level. Monitoring and research are important
complementary scientific tools for the implementation and the definition of policy
action. The different scientific approaches and their interface with policy are discussed
in section 3.3.2. and section 3.3.3.
3.3.1. POLICY ACTIONS
In this section, national actions following implementation of the EU Policy actions or
being a national initiative have been reviewed for a number of MS. Most MS have
adhered to the EU recommendations while others have developed stricter legislation,
mandatory or voluntary recommendations. The exposure thresholds may cover the
whole, or parts of, the range from 0 Hz to 300 GHz. Such thresholds may be issued by
one or several authorities/bodies such as the Building and Planning Board, National
health Board, a Radiation Protection Institute or others, depending on the applications
considered. The measures taken nationally to monitor exposure and carry out research
of exposure may vary widely, and be driven by different interests such as public and
political debate, national business interests or available funding.
The exposure limits can differ by factors of 10 or more, depending on the frequency
range and the exposed public (workers, general public)114. Among the factors that
contribute to the differences between countries are the selection and interpretation of
data, the reasons for which standards have been set, and the socio-political context
which may influence the level of application of precautionary principle. For example,
many Eastern European (EE) countries have traditionally taken into account the
possible, though still uncertain, long-term effects of low-level EMF exposures when
setting standards. Thus, current EMF standards in EE countries (Bulgaria, Poland,
113
European Commission website www.ec.europa.eu/health/electromagnetic_fields/role_eu_ms/index_en.htm [Accessed online 03/03/2010] 114
Worldwide standards on exposure to electromagnetic fields: an overview, Martino Grandolfo, Environmentalist (2009) 29:109–117 Published online: 26 February 2009, Springer Science + Business Media, LLC 2009
52 Promoting healthy environments: Electromagnetic fields
August 2010
Romania, and Slovakia) as common elements115 generally allow considerably lower
exposure levels than Western Europe countries. For instance, they consider the time of
exposure during the life-time, especially for occupational exposure (e.g. RF exposure).
Moreover, the concept of frequency dependent absorption is generally116 not
implemented117.
Finnish authorities have used the precautionary principle in a different way, giving
advice directed to parents about the use of mobile phones by their children, and
German authorities, similarly, have published advice on the precautionary principle for
mobile phone use118, but without specifying age groups.
In 2008, with an overview119 on how Member States have implemented the Council
Recommendation (1999/519/EC), the Commission has reported the way basic
restrictions and national reference levels are applied in the MS. While few countries
implemented basic restrictions stricter than the Recommendation (Belgium and
Greece, though not in the whole frequency range), the majority had implemented
measures at the same level as the guidelines given in the Recommendation, and some
had an implementation level that was less strict than in the Recommendation.
Regarding national reference levels, the majority of the MS comply with the reference
values specified in the Recommendation, sometimes providing additional guidelines
and promoting initiatives for further monitoring or research, or information to the
public. Six MS have implemented reference levels that are stricter than in the
Recommendation for the whole frequency range: Bulgaria, Italy, Lithuania, Luxemburg,
Poland, and Slovenia. Like these MS, Switzerland also applied stricter levels. A few MS
have implemented stricter recommendations only for specific intervals of the
frequency range, namely Greece (stricter for RF, IF), Belgium (stricter for RF) and the
Netherlands (stricter for ELF)120. The actions taken during the studied period of time
are of course also dependant on the pre-existing guidelines, monitoring and
information programmes before 2004. Germany, for instance, had developed a
detailed and restrictive legislation on exposure to EMF since 1997. Bulgaria has, until
115
Gajsˇek P, Pakhomov AG, Klauenberg BJ (2002) Electromagnetic field standards in central and eastern european countries: current state and stipulations for international harmonization. Health Phys 82(4):473–483. 116
Nikonova KV (1998) Status and implementation of russian hygienic radiofrequency standards. In: Repacholi MH, Robutsova NM, Muc AM (eds) Proceedings of the international meeting on biological effects and hygienic standardization, Moscow. World Health Organization, Geneva, pp 477–483. 117
Worldwide standards on exposure to electromagnetic fields: an overview, Martino Grandolfo, Environmentalist (2009) 29:109–117 Published online: 26 February 2009, Springer Science + Business Media, LLC 2009 118
Webpage for German The Federal Office for Radiation Protection www.bfs.de/en/elektro/hff/grenzwerte.htm, [Accessed online 08/03/2010] 119
EC 2008, Second Implementation Report 2002-2007 on the Application of the Council Recommendation (1999/519/EC) on the limitation of the exposure of the general public to electromagnetic fields: www.ec.europa.eu/health/ph_risk/documents/risk_rd03_en.pdf [Accessed online 03/03/2010] 120
EC 2008, Second Implementation Report 2002-2007 on the Application of the Council Recommendation (1999/519/EC) on the limitation of the exposure of the general public to electromagnetic fields: www.ec.europa.eu/health/ph_risk/documents/risk_rd03_en.pdf [Accessed online 03/03/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 53
2009, been developing new legislation on EMF and organising monitoring programmes
at the national level.
The competent authorities in Sweden only recommend the precautionary principle to
be applied for ELF from power lines and electric installations121, while in Finland, due to
the fact that the country is relatively sparsely populated, only a small percentage of the
public is exposed to ELF fields from power lines, and the restrictions concerning the
exposure to this class of fields are less strict122.
In parallel, due to the fact that in Finland, mobile phones are of common use and that
the mobile phone industry is highly developed, the main concern for both surveillance
and recommendations between 2004 and 2009 was focused on RF, compared to other
frequency ranges.
In Italy, measures have been focused on power plants and, similarly to Greece, on fixed
telecommunication equipment. Both countries apply recommendations on land based
antennas that are stricter than the guidelines given in the Council Recommendation.
In the following section several examples of national political approaches are
presented. Apart from their geographical distribution, the chosen countries, namely
Bulgaria, Greece and Finland could also in some respect represent countries with
different socio-political contexts influencing the public perception to the EMF exposure
issue (Table 3-7).
3.3.1.1 Bulgaria
In 2009, The Council Recommendation (1999/519/EC) was still under
implementation123 in Bulgaria. The ICNIRP Guidelines were accepted for the general
population as minimal requirements. Lower limits were set in frequency ranges 0 Hz to
300 GHz for areas where people stay periodically or continuously and areas for
sensitive groups (including children, pregnant women, elderly and ill people).
Accordingly, higher limit values were set for zones where human exposure is rare or
practically impossible due to their specific location.
The national database for sources of mobile communication technologies was in 2009
under development123, partly on initiative of the Ministry of Health. The database is to
provide information on technical characteristics, situation maps, safety zones and data
from measurements.
121
Report on EMF activities, 11th international Advisory Committee on EMF, June 2006, Kjell Hansson Mild, NIWL, Umea, Janez Marinko, SWEA, Solna, Lars Mjones, SSI, Stockholm ; Sweden. Available at: www.who.int/peh-emf/project/mapnatreps/Sweden_2006_EMF_activity_report.pdf [Accessed online 08/03/10] 122
Webpage of STUK, Radiation and Nuclear Safety Authority Finland, facts on Power Lines: www.stuk.fi/sateilytietoa/sateilevat_laitteet/magneettikentat/en_GB/voimalinjat/ [Accessed online 09/03/10] 123
Bulgarian National Program Committee (BNPC) International EMF Project REPORT, 14th International Advisory Committee Meeting WHO, Geneva, 11–12 June 2009, available at www.who.int/peh-emf/project/mapnatreps/BULGARIA_IAC_2009_report.pdf [Accessed online 08/03/10]
54 Promoting healthy environments: Electromagnetic fields
August 2010
3.3.1.2 Greece
Greece implemented the EU Council Recommendation (1999/519/EC) in the year 2000
through a national legislative act. For ELF fields, the EU recommendations were
followed, but stricter reference levels were set for public exposure to all kinds of land-
based antenna stations in the IF and RF frequency range. The safety limits for the
electromagnetic fields emitted by antenna stations, were set to 70% and to 60% of
ICNIRP’s values if the antenna station is closer than 300m from kindergartens, schools,
hospitals or eldercare facilities. A ministerial act was published in March 2008, defining
the technical aspects and all relevant details concerning the measurements, which
should amount, on an annual basis, to at least 20% of all the antenna stations in urban
areas124.
In Greece, the national authority for the protection of the general public to artificially
produced non-ionising radiation is the Atomic Energy Commission (EEAE). The
authority, or other authorised laboratories, carries out measurements of all kinds of
sources emitting RF electromagnetic fields, in order to monitor the compliance to the
legislation. Over one and a half thousand audits have been performed till now. About
70% of the RF measurements concern cellular phone base stations (1200 stations).
Measurements are also performed on request from the public. The results generally
show levels from tens to thousands times below ICNIRP’s reference levels. The cases
where higher levels were observed regarded only powerful radio or TV broadcasting
antennas125.
3.3.1.3 Finland
The Finnish authorities comply with the guidance given by the EU Council
Recommendation and the ICNIRP, but also give specific instructions for magnetic fields
to be kept as low as reasonably possible in the areas where the general public,
particularly children, may stay for a significant length of time. For the limitation of
exposure to non-ionising radiation Finnish authorities, give, for instance, a maximum
value of electric and magnetic fields with frequencies above 100 kHz (IF, RF radiation)
and recommended values for the electric and magnetic fields with frequencies below
100 kHz (ELF radiation)126.
STUK -the Finnish Radiation and Nuclear Safety Authority- states that the SAR value
(i.e. heat energy absorbed per kg tissue) absorbed by head and body must not exceed
124
RF Electromagnetic Fields Measurements in Greece; E. Karabetsos, G. Filippopoulos, D. Koutounidis CH. Govari, N. Skamnakis, Non ionizing radiation office, Greek atomic energy commission. COST 281 / EMF-NET seminar on The Role of Dosimetry in High-Quality EMF Risk Assessment Ljubljana, Slovenia September, 13 2006; Zagreb, Croatia September 14 – 15 2006 125
RF Electromagnetic Fields Measurements in Greece; E. Karabetsos, G. Filippopoulos, D. Koutounidis CH. Govari, N. Skamnakis, Non ionizing radiation office, Greek atomic energy commission. COST 281 / EMF-NET seminar on The Role of Dosimetry in High-Quality EMF Risk Assessment Ljubljana, Slovenia September, 13 2006; Zagreb, Croatia September 14 – 15 2006. 126
Helsingfors den 4 april 2002, Social- och hälsovårdsministeriets förordning om begränsning av befolkningens exponering för icke-joniserande strålning (Social Affairs and Health Decree on the limitation of exposure to non-ionizing radiation)
August 2010 Promoting healthy environments: Electromagnetic fields 55
2 W/kg, and by arms and legs 4 W/kg, respectively127. Further, they state that it is
reasonable to restrict children’s use of mobile phones. Parents are recommended to
advise their children to use text messages rather than mobile phone calls, to restrict
the number of their children’s mobile phone calls and their duration, to guide their
children to use a hands-free set and to keep the mobile phone at least a few
centimetres away from the body. STUK does not find it justifiable to entirely prohibit
children’s use of mobile phones, since there is a safety aspect in facilitating children’s
communication with parents127.
STUK, since 2003, also carries out the surveillance of mobile phones on the market by
spot-check testing SAR values of different phone models, to ensure that the maximum
value is not exceeded.
Table 3-7 : Policy actions in Bulgaria, Greece and Finland
Countries Bulgaria Greece Finland
EC
recommendation
implementation
EC Recommendation (1999/519/EC) under implementation Stricter limits were set in all frequency ranges Limits were differentiated depending on exposure
EC Recommendation (1999/519/EC) implemented in 2000, national legislative act Stricter reference levels in the IF and RF frequency range, 70% and to 60% of ICNIRP’s values Limits were differentiated depending on exposure
Authorities comply with EC Recommendation (1999/519/EC) Maximum value for IF, RF radiation and recommended values for ELF radiation Maximal SAR value regarding mobile telephony equipment Recommendation to restrict children’s use of mobile phones
Other national initiatives
Monitoring programmes under development, measurements are also being done on demand
Ministerial act in 2008, on monitoring at least 20% of all the antenna stations in urban areas
Surveillance is carried out of mobile phones on the market by spot-check testing SAR values
3.3.2. SCIENTIFIC ACTIONS
On the MS level, many different research initiatives exist and it is difficult to analyse
them exhaustively. However, some major research areas can be identified. The
research projects involving the largest number of MS in the period of 2004-2009 were
focused on the potential impacts of the vastly increased use of mobile telephonic
equipment emitting RFs. Several studies have been carried out on this and related
topics in different MS countries, regarding exposure environments, conditions and
biological effects. A number of epidemiological studies were also reported. Studies on
monitoring, field measurements and engineering have also been carried out in several
127
Statement of Finnish Radiation and Nuclear Safety Authority on 7th January 2009. Website: www.stuk.fi/sateilytietoa/sateilyn_terveysvaikutukset/matkapuhelin_terveysvaikutus/en_GB/stukin_matkapuhelinkannanotto/ [Accessed online 03/03/2010]
56 Promoting healthy environments: Electromagnetic fields
August 2010
MS. Among others, Finnish and German research on mobile phones has been
prominent with involvement of national telecom industry.
Another large research area during this period evolved in response to the EU Directive
2004/40 on occupational exposure. The reference levels determined in the Directive
stirred a lot of discussion and induced research activities in several countries. One of
the main questions concerned the exposure to EMF in medical environments, mainly
due to the use of MRI equipment.
In some MS (e.g. Italy), the EU or other international research programmes constitute
the main financial resource for the research activity on EMF. In others (e.g. Bulgaria),
the need for a structured risk communication targeting the public, and the national
authorities as well as the creation of a public database organisation have triggered
various scientific initiatives at the national level involving several research institutions
(see following section) (Table 3-8).
3.3.2.1 Germany
The German Federal Office for Radiation Protection (BfS) developed a research
programme128 on high frequency electromagnetic fields within the scope of the
German Mobile Telecommunication Programme (DMF)129. The Programme, which
lasted from 2002 to 2008, comprised research projects on the topic of “Mobile
Telecommunication” including the fields of “Biology”, “Dosimetry”, “Epidemiology”,
and “Risk Communication”. Apart from the DMF project, further research in the EMF
field is initiated and coordinated by BfS within the scope of the BMU Environmental
Research Plan. The research was motivated by the fact that, according to BfS, there is
some indication that High frequency electromagnetic fields can cause biological effects
even when the levels are below required German limit values (corresponding to
ICNIRP). The Programme also aimed at finding potential causes of electro sensitivity.
3.3.2.2 Italy
No national programme on biological and health effects was running during 2009, but
a number of studies were being carried out in collaboration between institutes from
Italy and other countries. Research on biological effects of exposure to GSM130-like RF
fields on gene expression in human cells- was carried out in vitro, and the effects of
exposure to WiFi signals on the immune system of newborn mice were described131. In
2007, the Italian Institute for Prevention and Safety at Work (ISPESL) promoted a
128
Webpage for German Mobile Telecommunication Research Programme (DMF), www.emf-forschungsprogramm.de/ [Accessed online 08/03/10] 129
Webpage for German The Federal Office for Radiation Protection www.bfs.de/elektro/hff?setlang=en, [Accessed online 08/03/10] 130
GSM =Global System for Mobile communications, a network for mobile phones 131
Measures for the exposure of new born animals to WiFi signals. C. Marino, Paolo Galloni, Francesca Nasta, Rosanna Pinto, Claudio Pioli and Giorgio A. Lovisolo, Unit of Toxicology and Biomedical Sciences, Casaccia Research Center, ENEA, Rome, Italy. Abstracts for Workshop in Stuttgart 2008: www.fgf.de/english/research_projects/reports/workshops/abstracts/Abstractbook-FGF-Workshop-Stuttgart-2008.pdf [Accessed online 08/03/10]
August 2010 Promoting healthy environments: Electromagnetic fields 57
research project to analyse the Italian scenario of the practical implementation of the
EU Directive 2004/40. An additional aim was to standardise procedures of
measurement and numerical dosimetry, as tools to assess exposure of medical staff in
the proximity of MRI systems132. Epidemiological research has also been carried out
through the Interphone study. Italian researchers have also studied childhood lympho-
haomatopoietic tumours (leukaemia, neuroblastoma and others) in relation to some
environmental agents such as EMF133.
3.3.2.3 Sweden
The number of researchers in Sweden dealing with EMF and health issues had
decreased in 2008 in respect to previous years due to lack of funding135. Many of the
studies were conducted in an international collaboration and most concerned mobile
telephony equipment. Apart from exposure from handsets for mobile telephony, in
Sweden, mobile phone base stations, especially GSM900134, caused the highest
contribution to increased RF exposure135. Söderqvist et al. performed a population-
based study to assess the use of mobile phones and cordless phones among children
aged 7–14 years. A questionnaire comprising 24 questions was sent to 2000 Swedish
persons, using a stratified sampling scheme136. The study showed that children used
mobile and cordless phones early in life and that very few use hands-free equipment. It
also showed that girls use mobile phones significantly more than boys.
Like in Germany, hypersensitivity has been recognised as an area where more scientific
research is needed. A number of summaries from Swedish authorities137 have
examined whether the RF electromagnetic fields could produce symptoms such as
headache, fatigue and sleep disturbances. So far, no study has confirmed that the
symptoms of people who feel affected are caused by radiofrequency fields generated
by mobile phones or base stations. The scientific evidence is, however, much smaller
than those of extreme low frequency field138. Hillert et al. studied the effect of GSM
exposure on self-reported symptoms and detection of fields by participants during
132
Paolo Vecchia, National Institute of Health, Rome Electromagnetic fields and Italy; 2008-2009 www.who.int/peh-emf/project/mapnatreps/ITALY_report_EMF_Activities.pdf [Accessed online 08/03/10] 133
Italy, Present status of EMF activities, 11th international Advisory Committee Meeting on EMF, 11th of June 2006. Notes by Paolo Vecchia, National Institute of Health, Rome. Accessible on www.who.int/peh-emf/project/mapnatreps/Italy_2006_EMF_activity_report.pdf [Accessed online 09/03/10] 134
GSM 900 is a type of network in Europe using the band 890-915 MHz for sending data and the band 935-960 MHz for receiving information. 135
Sweden Report on EMF Activities 13th International Advisory Committee on EMF June 2008 .Kjell Hansson Mild, Department of Radiation Physics, Umeå University, Janez Marinko, Swedish Work Environment Authority (SWEA), Lars Mjönes, Swedish Radiation Protection Authority, (SSI), Stockholm, Sweden. Available on www.who.int/peh-emf/project/mapnatreps/sweden/en/index.html, [Accessed online 09/03/10] 136
Söderqvist F, Hardell L, Carlberg M, Hansson Mild K. Ownership and use of wireless telephones: a population-based study of Swedish children aged 7-14 years. BMC Public Health. 2007 Jun 11;7(147):105 137
IEGEMF. Recent Research on EMF and Health Risks. Fifth annual report from SSI’s Independent Expert Group on Electromagnetic Fields,2007. Revised edition 15 April, 2008. Stockholm: Statens Strålskyddsinstitut, 2008. SSI Rapport 2008:12 138
Swedish Environmental Health Report 2009, Miljöhälsorapport 2009, Socialstyrelsen, Karolinska Institutet, 2009-126-70, Västeras, Sweden, Mars 2009
58 Promoting healthy environments: Electromagnetic fields
August 2010
GSM exposure time (real or sham). The study followed a well defined study group
including people who had reported symptoms attributed to mobile phone use139. The
result showed that the study group could not detect RF exposure better than by
chance. However, the non-symptom group reported a higher prevalence of headache
towards the end of RF exposure period, which (according to the author) justifies
further investigation of possible physical correlations.
3.3.2.4 Summary table
Table 3-8: Scientific actions in Germany, Italy and Sweden
Germany Italy Sweden
National research programme on RF fields within the German Mobile Telecommunication Programme DMF (2002 to 2008) Research initiated by the state within the BMU Environmental Research Plan
No national programme on biological and health effects was running during 2009 Research project to analyse Italian implementation of the EU Directive 2004/40, also assessing exposure of medical staff in the proximity of MRI systems
Decreasing number of EMF researchers Scientific summaries initiated by Swedish authorities, examining possible risks/effects, and causes for symptoms such as hypersensitivity
Studies include: Mobile Telecommunication; Biology, Dosimetry, Epidemiology, Risk Communication Possible effects of RF fields below required German limit values Potential causes of electro sensitivity
Studies in international collaboration including: Biological effects of exposure to GSM-like RF fields; Effects of exposure to WiFi signals on the immune system; Epidemiological research through the Interphone study
Studies in an international collaboration including: Mobile telephony equipment; Population-based survey on use of mobile phones among children
138
The effects of 884 MHz GSM wireless communication signals on headache and other symptoms: an experimental provocation study. Hillert L, Akerstedt T, Lowden A, Wiholm C, Kuster N, Ebert S, Boutry C, Moffat SD, Berg M, Arnetz BB.Bioelectromagnetics. 2008 Apr;29(3):185-96.
August 2010 Promoting healthy environments: Electromagnetic fields 59
3.3.3. SCIENCE-POLICY INTERFACE
A number of MS (e.g. Italy, Greece, and Bulgaria) report high levels of public concern
regarding the potential health effects of EMF. Several measures have thus been taken
to inform and educate the public and policy makers. Therefore, various approaches to
manage the science-policy interface have been developed to facilitate this important
information exchange.
3.3.3.1 National scientific bodies
National scientific bodies are most commonly the advisors both for government and
the public in several countries, such as, for instance, the Nordic countries140 and
Germany141. These authorities are often responsible for the implementation of EC
recommendations into national context. They identify eventual needs for further
research, sometimes performing parts of the research and the monitoring in the
country. Such institutions also manage the communication with the public (commonly
through internet and media), and organise conferences and meetings.
Although the existence of a national scientific body is not a tool in itself, a number of
factors indicate that it may be one of the keys to successful interactions in the
interface between science, government and the public. For instance, in 2002 the Italian
Government appointed an International Committee to provide advice on the health
risks of EMF and related policies. Following the recommendations of the appointed
experts, the Italian Ministry of Health launched a project aiming at the creation of a
single scientific body at the ministry of health responsible for advice to the
government, health authorities and the public142.
An essential prerequisite in risk communication is that the recipients have sufficient
trust in the information provider143. This is of course especially important when acting
on a governmental mandate, while the governmental mandate itself may be a
prerequisite for public confidence. Further, there is an advantage, in the decision-
making process, of being aware of public and stakeholders’ opinions. For a successful
interaction of all the involved parties, a reasonable level of understanding of the
problem and the risks involved is necessary. As a consequence, it can be an advantage
if the information is disseminated to the public and stakeholders through one trusted
140
For example Danish National Board of Health (Sundhedsstyrelsen), Radiation and Nuclear Safety Authority of Finland (Säteilyturvakeskus), Icelandic Radiation Protection Institute (Geislavarnir Ríkisins), Norwegian Radiation Protection Authority (Statens strålevern), Swedish Radiation Protection Authority (Statens strålskyddsinstitut 141
German Federal Office for Radiation Protection (BfS) 142
Italy, present status of EMF Activities, 11th international Advisory Committee Meeting on EMF, 7-9 June 2006, www.who.int/peh-emf/project/mapnatreps/Italy_2006_EMF_activity_report.pdf [Accessed online 09/03/2010] 143
JRC/EMF-NET. Electromagnetic Field Exposure: Risk Communication in the context of Uncertainty, Pages 15-25/ The Building Blocks of Risk Communication, Peter Wiedemann, Research Centre Juelich, MUT – INB, Germany. Available on: www.web.jrc.ec.europa.eu/emf-net/doc/pubblications/Book_Risk%20communication.pdf [Accessed 11/03/2010]
60 Promoting healthy environments: Electromagnetic fields
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source of information, instead of many different expert groups, and thus, a single
national scientific body may favour the information spreading and communication
among scientists, public and policy makers.
The existence of an independent agency or scientific institution can be an important
factor in this respect, as has been observed in Spain144 and Bulgaria (see below).
Among many other functions, the body can also have an important function in
suggesting research organisation and funding, and also in communicating with the
international scientific community.
The national science-policy interface may also take place through other more informal
initiatives. For example, in Italy, communication and initiatives on EMF are partly being
carried out through a Foundation (Ugo Bordoni)145.
3.3.3.2 Regional or national meetings/workshops
Meetings that addressed human exposure to EMF have been organised in several
countries, including Bulgaria, Greece and Italy. In Bulgaria these were carried out in
regions where the general public is particularly concerned with or critical of national
EMF policies. The Bulgarian National Programme Committee also organises meetings
with media as well as with the governmental administration of the Ministry of Health,
the Parliament and the regional authorities.
Only 2 percent of Europeans prefer146 local courses or seminars as a source of
information on EMF.
3.3.3.3 Training and seminars for the general public
It is important to consider that only a limited amount of people can allocate time and
economic resources to learn more about EMF. Nevertheless, education is crucial for
some groups of population, for example those responsible for human resources in
work places where occupational exposure may occur. When a few responsible staff
members have been trained, they can advice the executives as well as the rest of the
staff on EMF safety issues and thus spread the information further.
3.3.3.4 Public consultation
Public consultation may be a well-defined platform for the dialogue between
concerned parties. It may be performed through, for example blogs or other debate
forums for dialogue, or meetings with citizens’ committees and local authorities.
Special environmental impact assessment meetings are also organised in some
144
JRC/EMF-NET. Electromagnetic Field Exposure: Risk Communication in the context of Uncertainty, Pages 111-119 / Evolution in the social perception of risk associated with EMF in Spain” by Maria Jesús González.Available on www.web.jrc.ec.europa.eu/emf-net/doc/pubblications/Book_Risk%20communication.pdf [Accessed 11/03/2010] 145
Foundation Ugo Bordoni website, www.fub.it, [Accessed online 09/03/10] 146
EC 2010, Special Eurobarometer – Electromagnetic fields. ec.europa.eu/public_opinion/archives/ebs/ebs_347_en.pdf [Accessed online 16/08/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 61
countries in parallel with the new installation of power lines. Through public
consultation process, which is a part of, for example, the Swedish legislation on urban
planning, the public who are concerned can be involved in the planning process and
contribute to the decision of constructing new buildings near power lines or not147.
Public consultation may also give useful input to decision-makers, and at the same time
allow concerned public or stakeholders to be informed and involved.
3.3.3.5 Internet
Internet is a commonly used source of information, and is easily updated. Information
can be expressed at different levels of detail, from very general ‘first page’ information
to subsections and links providing more information. In the Finnish web page on EMF,
for example, data on each mobile telephone model tested by the authorities can be
found148.
Moreover, the internet, as a media, has developed several interactive tools where
information exchange and debate can take place, for example through blogs, where
people can express their opinion publicly and receive answers and comments. About
10 per cent of the European population prefers this channel for information on EMF151.
3.3.3.6 Fact sheets, prints
In several countries, fact sheets informing on EMF have been translated and printed, to
the advantage of the people with no internet access. In Sweden and Finland, the
government has prepared information leaflets that are easily understandable by lay
people (Figure 3-2). Around 10 per cent151 of Europeans preferred official or specialist
publications as a source of information.
A disadvantage of this kind of tool is that it is one-sided information and does not reply
directly to the concerns of the reader, thus not favouring successful risk
communication. Accordingly to a study on the public awareness of two leaflets
produced by the Department of Health in the UK149, there is a large difference between
the information provided on the sheet and the information the receiver takes in, as
well as the risk perception. In the study, over half of the people who claimed to have
come across the studied leaflet were not able to recognise any of the key
recommendations it contained. Rather than reassuring, the information was linked
with concern. The results indicate the importance of policy makers developing a clear
understanding of the possible effects of communicating precautionary advice.
147
Internet collection of Swedish Law and regulations (Notisum, in Swedish)Planning and Building Regulation (1987:383) www2.notisum.com/Pub/Doc.aspx?url=/rnp/sls/lag/19870383.htm [Accessed online 22/03/10] 148
Webpage of Radiation and Nuclear Safety Authority Finland www.stuk.fi/sateilytietoa/sateilevat_laitteet/laitteiden_valvonta/en_GB/matkapuhelimet/ [Accessed online 09/03/10] 149
Barnett J., Timotijevic L, Shepherd R and Senior V (2006) Public Responses To Precautionary Information From The Department Of Health (UK) About Possible Health Risks From Mobile Phones, Health Policy, 82, 240-250
62 Promoting healthy environments: Electromagnetic fields
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Figure 3-2: Fact sheet from Finnish Radiation and Nuclear safety Authority, STUK150
Printed items also have the disadvantage of quickly becoming out of date and their
distribution may be both resource consuming (or inexistent) and produce waste.
3.3.3.7 TV, radio, newspapers
According to the Eurobarometer survey151 television is the most preferred medium
through which to receive information on risks regarding EMF (55%), followed by
newspapers and magazines (38%), and Internet (19%). While being the preferred
information source for the public, often very informative and available, these media
serve as a weak scene for the science-policy interface in many other aspects. Apart
from a perception of what makes people worried, it generally does not favour
exchange of knowledge, suggest future areas of scientific interest or give response to
governmental bodies.
3.3.3.8 Telephone, e-mail
In most countries the citizens may have a personal response to questions on the phone
or via e-mail. This source of information, which is quick and allows for questions and
explanations, is useful for both authorities and the public. The personal approach to an
authority, researcher or other body when seeking advice on EMF may have great
advantages in that the question and response will mostly be very exact, and rapid.
However, only a few percent of Europeans preferred e-mail as a source of information
while 8 per cent preferred other types of personalised correspondence151. The effort
150
Source: www.stuk.fi, [Accessed online 08/03/10] 151
EC 2010, Special Eurobarometer – Electromagnetic fields: ec.europa.eu/public_opinion/archives/ebs/ebs_347_en.pdf [Accessed online 16/08/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 63
involved may be partly finding the right recipient for the question, something which is
facilitated by the commitment of a dedicated address or phone line. Furthermore,
anonymity may be preferred to giving out personal information, particularly if feeling
uninformed.
The countries below were chosen for a closer study because they show examples of
different approaches in the science-policy interface, and also due to their relative
difference in geographical, demographical and socio-political context that may
influence the public perception of the EMF issue. Table 3-9 summarises the different
national approaches.
Bulgaria
In Bulgaria scientific advice is communicated to public, government and authorities by
a National Program Committee of specialists in the topic (BNPC). Public information
activities exist including:
production of brochures and fact sheets,
regional meetings,
training courses to different groups of specialists or professional groups,
a website152 with regional information for Bulgaria
a dedicated telephone number for the general population for every kind of
questions in the field of EMF safety153.
Bulgaria reports153 on a growing public concern regarding EMF produced by base
stations. However, the concern may have other reasons than uncertain scientific proof.
Since financial benefits are connected to the localisation of base stations, declared
health problems have sometimes had economical underlying explanations. Also in
Bulgaria, there are indications of problems with private financial interests driving
information campaigns, such as private performing risk assessments, profiting from an
increased public concern. There are also reports that information is sometimes
distorted for political reasons, in which case the media sometimes deliver information
that add to public concern. As it appears, scientists sometimes have problems in
communicating scientific information153.
France
In France, The Ministry of Health has published information via internet as well as
leaflets on mobile telephones and health154, and taken the initiative during 2009 of
roundtable discussions with stakeholders on the potential dangers of mobile phones
and mast155. In addition, the Health and Radiofrequencies Foundation156 is a research
152
Webpage for National Program Committee, (in Bulgarian), www.emfbg.com [Accessed online 08/03/10] 153
Bulgarian National Program Committee (BNPC) International EMF Project REPORT, 14th International Advisory Committee Meeting WHO, Geneva, 11–12 June 2009, www.who.int/peh-emf/project/mapnatreps/BULGARIA_IAC_2009_report.pdf [Accessed online 08/03/10] 154
Information folder « Téléphones mobiles, santé et sécurité » available on Webpage for Ministry of Health and Sports ww.sante.gouv.fr/htm/dossiers/ [Accessed online 08/03/10] 155
Actu-Environnement, (French web magazine for professionals in the environmental sector)
64 Promoting healthy environments: Electromagnetic fields
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foundation, established at the initiative of the State, (the Ministry of Research and
Industry) in order to define, promote and fund research programmes and to work for
dissemination of knowledge on this subject among the public and professionals. A few
large industrial companies have contributed to its creation. The foundation organises
open scientific meetings as well as exhibitions to give to all types of public a chance to
understand what EMF are and how they might affect health. Moreover, the
Foundation has organised a “blue bus” that travelled through France in 2007 with
information on the topic, and an interactive website has been developed, where fact
sheets and Q&A documentation are distributed156.
A number of mobile telephone operators selling on the French market have also
formed a cooperative, the AFOM (French Association of Mobile Operators), with the
mission to spread information on the deployment of mobile telephone networks,
environment and health. One of their actions is for instance to provide an information
leaflet distributed when buying mobile telephony services and equipment in France157.
UK
In the UK the Science and Technology Committee exists to ensure that Government
policy and decision-making are based on good scientific and engineering advice and
evidence. The implementation of the EU 2004 Directive in the country has been used
as one of the case studies in a recent report158.
When preparing for the possible implementation of the EU 2004 Directive, the UK
reported on an explicit aim of involving stakeholders (e.g. the Royal College of
Radiologists, the manufacturers’ organisation (EEF), trade unions and others). The UK
Health and Safety Executive (HSE) set up two working groups including a broad based
cross industry grouping, with members from a range of sectors likely to be affected by
the Directive’s implementation (medical or technical involved in Magnetic Resonance
Imaging, engineering, welding industry). Both groups’ outputs were used to inform the
HSE and to help develop any detailed regulatory proposals for implementation159.
Another example of science-policy interfaces in the UK is the Stakeholder Advisory
Group, SAGE, which was set up by the Department of Health regarding ELF. The aim is
to find practical recommendations for a precautionary approach, in a process for
decision-making not only based on reviewed science. The group has representation
www.actu-environnement.com/ae/news/debat_effet_ondes_electromagnetiques_sante_6961.php4 [Accessed online 08/03/10] 156
Webpage for French Health and Radiofrequencies Foundation, www.sante-radiofrequences.org [Accessed online 11/03/2010] 157
Webpage for AFOM, French Association of Mobile Operators www.afom.fr/v4/TEMPLATES/contenus_aqqc.php?doc_ID=894&rubrique_ID=310&rubLimit=268 [Accessed online 11/03/2010] 158
Scientific advice, risk and evidence: how Government handles them, Select Committee on Science and Technology. Conclusions: PUBLICATION OF REPORT, SCIENTIFIC ADVICE, RISK AND EVIDENCE BASED POLICY MAKING No. 63 of Session 2005-06 8 November October 2006, available on internet : www.parliament.uk/parliamentary_committees/science_technology.cfm, [Accessed on 08/03/10] 159
Web page of
UK Health and Safety Executive, www.hse.gov.uk/radiation/nonionising/electro.htm [Accessed on 09/03/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 65
from public concern groups who advocate greater precaution as well as from the
power supply industry, several government departments and the Health Protection
Agency. The work is expected to include consideration of ways in which people can
reduce domestic exposures to ELF by taking action within their own homes as well as
discussions about precautionary approaches to be adopted with respect to power
transmission lines and the local supply network160. According to the web page, one of
the methods used is involving an independent third party to design and run the
process, and to facilitate meetings in order to build trust and help create a mutual
understanding161.
Summary table
Table 3-9 : Science-Policy interfaces in Bulgaria, France and UK on EMF
Bulgaria France UK
National Committee of specialists spread information by internet, dedicated phone line, brochures, fact sheets,
regional meetings and training courses
Problem with non scientific informants stirring worries.
Information disseminated by both Government and private
initiatives on internet, leaflets, and a travelling
information bus.
Research foundation (supported by industry) organises meetings and
exhibitions
Public Consultation on mobile phone technology
Governmental Committee to monitor science-policy
interaction (generally)
Public Consultation groups with stakeholders on
implementation of the EC 2004 Directive
Public Consultation scheme on use of
precautionary principle and EMF
160
Webpage of UK Health Protection Agency, www.hpa.org.uk/webw/HPAweb&HPAwebStandard/HPAweb_C/1197637106537?p=1158934607761 [Accessed online 22/03/10] 161
The SAGE website www.rkpartnership.co.uk [Accessed on line 2010-03-22]
66 Promoting healthy environments: Electromagnetic fields
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August 2010 Promoting healthy environments: Electromagnetic fields 67
4. POSSIBLE MEASURES TO AVOID UNNECESSARY EXPOSURE
4.1. DIFFERENT EXPOSURE SCENARIOS
Based on current knowledge, for each of the analysed EMF frequencies it is possible to
identify several high exposure scenarios (Table 4-1). High exposure scenarios in the
following table comprise two different types of ‘high’ exposures:
A: possibly exceeding protection limits,
B: elevated compared to the normal background level.
Table 4-1: High exposure scenarios for differnet types of EMF162
Scenario Type ELF IF RF SF Comments
Living close to electric installations of power transmission and distribution
B X Usually a factor of 100 to 500 below the protection guidelines of 100 µT
Living close to railroads B X
Usually a factor of 100 to 500 below the protection guidelines depending on the frequency of the railway system
Electric supply to houses via buried wires or indoor power distribution (indoor wiring)
B X
Exceptionally above background, usually a factor of 100 to 500 below the protection guidelines of 100 µT
Use of electric devices (hair dryer, electric shaver, vacuum cleaner,...), use of electric vehicles, indoor electric installations
B X
Possibly in the range of several mT, but only intermittent and therefore below the 24 hours protection limits of average exposure below 100 µT
Occupational exposures as e.g. workers in power plant
A X Protection limits may be exceeded
Occupational exposures in the vicinity of welding machines or induction heating furnaces
A X X Protection limits may be exceeded
162
Hansson Mild K., Alanko T., Decat G., et al. Exposure of workers to electromagnetic fields. A review of open questions on exposure assessment techniques. JOSE. 2009; 15(1): 3-33. Information collected in chapter 2.
68 Promoting healthy environments: Electromagnetic fields
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Scenario Type ELF IF RF SF Comments
Anti-theft devices, security systems
A X X
Intermittent exposures, possibly exceeding protection guidelines between the gates; possible longer term exposure of workers
Living near TV or radio broadcast transmitters or mobile phone base stations, having a cordless phone base station at home
B X Usually well below protection guidelines which are depending on frequency
Use of mobile phones or cordless phones, WLAN
B X Localized exposure to the brain, not exceeding the protection limits
Occupational exposure e.g. RF heat sealers, radio/TV tower workers and radar operators
A X Possibly exceeding protection guidelines
Use of induction heating cooking
B X Intermittent only during use
Workers operating on magnetic resonance device (MRI, scanners, etc.)
A X X X Possibly exceeding international safety guidelines
Precautionary measures used in some of the EU Member States are expected to have
an impact on EMF exposure, particularly a reduction of the proportion of persons
exposed in the high range of the overall exposure distribution. The actions to reduce
the exposure can be sub-divided into two categories: technical approaches and policy
approaches.
4.2. TECHNICAL APPROCHES
Different technical approaches can be used to reduce exposure to EMF. Potential
health effects generated by exposure to mobile phones (RF) and power lines (ELF) have
been the object of study more frequently than exposure to other frequencies. Due to
this reason and due to the fact that they are at the centre of public concern, technical
solutions to reduce exposure from mobile phones and phone lines are more developed
than the options to decrease EMF exposure from others sources.
August 2010 Promoting healthy environments: Electromagnetic fields 69
4.2.1. APPROACHES TO REDUCE EXPOSURE TO ELF
The main sources of ELF exposure are power lines and electrical equipment (Table 2-2).
There are many ways to reduce exposure to ELF, such as the relocation of overhead
power lines away from populated areas or their burying, installation of vector-
sequence arrangements, phase conductor splittings163, etc. These options have been
considered by WHO164 and many other national or international regulatory bodies.
Some of these measures have been put in place in some countries, e.g. in the
Netherlands since 2005, dwellings cannot be built within 35 meters from power
lines163. This distance is increased in the case of buildings hosting sensitive population
(e.g. children), in order to avoid average exposure levels exceeding 0.4 µT. Similarly,
since 1998 in Ireland, the building of electrical power installations and transmission
lines is forbidden within 22 metres from schools and day-care centres164. In the UK,
underground cables are used when the relocation of power lines is not possible165. In
Norway, Netherlands and Denmark it is also mandatory to leave open space between
residences or other places where people might be present in longer term and high-
voltage power lines. Often these measures refer only to newly built overhead power
lines or to specifically sensitive places like kindergartens or schools, because moving
existing buildings is difficult. However, it should be highlighted that there is no clear
and widely accepted scientific evidence for definition of sensitive places. Studies on
childhood leukaemia, for instance, tend to highlight an association with long term EMF
exposure rather than short term. Thus, the rationale for declaring kindergartens but
not residential areas where children live as sensitive places is unclear, given the fact
that young children may spend more time at home than in a kindergarten at the young
age at which children develop leukaemia (age peak between 1-5 years).
Such measures (e.g. to leave a corridor between residences and overhead power lines)
enable to avoid long-term ELF exposures above a defined level. If the corridor is 200 m
wide, for instance, power line-related exposures above 0.2 µT are not expected166. The
total impact depends on the contribution of power lines to the overall exposure of the
population. For instance, in the UK or in Germany, power lines contribute to
approximately one-third of the average 24 hour exposures exceeding 0.2 µT in
children. Therefore, corridors would eliminate about one-third of such elevated
163
Kelfkens G., Van Wolven J., Pennders R. et al. Costs and benefits of the reduction of magnetic fields due to overhead power lines: www.rivm.nl/milieuportaal/images/Costs%20and%20benefits%20of%20magnetic%20field%20reductin.pdf [Accessed online 18/05/2010] 164
World Health Organization - Extremely Low Frequency Fields Environmental Health Criteria Monograph No.238, Chapter 13: protective measures: www.who.int/peh-emf/publications/Chapter%2013%20v2.pdf [Accessed online 18/05/2010] 165
Stakeholder Advisory Group on ELF EMFs (SAGE) report. Precautionary approaches to ELF EMFs - First Interim Assessment: Power Lines and Property, Wiring in Homes, and Electrical Equipment in Homes. 2007: www.electric-fields.bris.ac.uk/SAGE1streport.pdf [Accessed online 18/05/2010] 166
Maslanyj MP, et al. Investigation of the sources of residential power frequency magnetic field exposure in the UK Childhood Cancer Study. J Radiol Prot. 2007 Mar;27(1):41-58.
70 Promoting healthy environments: Electromagnetic fields
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exposures, i.e. the exposure prevalence at 0.2 µT would decrease from about 1.5% to
1%166,167.
However, keeping a distance between power lines and buildings appears to be more
easily applicable in high-resource countries with not too dense urban areas in order to
have enough space to have choices when routing power line corridors. This is more
difficult to achieve in poorer countries or in densely populated areas. Furthermore,
new energy plants are frequently built in remote areas and, hence, power has to be
transmitted to the metropolitan regions where the consumers live. This results in the
construction of new power lines in some countries to transport energy. It then has to
be assessed whether a precautionary approach that avoids building power lines too
close to residences is feasible (a case by case approach).
The decision of how to plan power line corridors remains difficult, as precautionary
measures to avoid building those lines close to residences are usually costly, while it is
currently unclear whether these precautionary actions have any health benefits. Thus,
a case by case cost/benefit analysis needs to be performed in order to evaluate what is
the best option (e.g. building new underground power lines or to remove existing
overhead power lines).
Precautionary measures that do not allow to build new overhead power lines too close
to residential areas or, vice versa, that do not allow to build new residential areas too
close to existing power lines, are only relevant options if the scenarios of building new
power lines are common. As long as no new overhead power lines are built, this
recommendation does not apply and the exposure levels in the general public can be
assumed to remain the same as no action is taken. As an example, few new high
voltage power lines were built in Germany in the last 30 years, thus, a
recommendation to stop building new power lines in the vicinity of residential areas
would have mattered only to a little extent. Further it needs to be noted that such a
recommendation might introduce social inequality: if precaution is taken only in areas
where new power lines are built, those living close to existing power lines where no
action is taken may feel treated badly by the authorities. Thus, the majority of
exposure remains associated with existing lines. Therefore, solutions are needed to
reduce the ELF from power lines in general.
Technically, the replacement of some power lines with cables in the soil is possible;
thereby electric fields from underground cables are absorbed by the earth above the
buried cable. However the decrease of ELF depends on the depth at which the cable is
placed and superficially buried power lines can result in direct ELF exposure on the
above surface for few metres168.
167
Schüz J,et al. Extremely low frequency magnetic fields in residences in Germany. Distribution of measurements, comparison of two methods for assessing exposure, and predictors for the occurrence of magnetic fields above background level. Radiat Environ Biophys. 2000 Dec;39(4):233-40. 168
Stuk website. Power lines. 2009: www.stuk.fi/sateilytietoa/sateilevat_laitteet/magneettikentat/en_GB/voimalinjat/ [Accessed online 18/05/2009]
August 2010 Promoting healthy environments: Electromagnetic fields 71
Furthermore, power line cables could be twisted together forming what is known as
aerial bundled conductor, which neutralises some of the emissions and lowers the
ELF170.
A study about the subsea windfarm power cables showed that as the permeability of
the power cable armour increased, the resultant EMF strength outside the cable
decreased. In addition, the conductivity of the armour could contribute to reduce the
EMF strength. Therefore, the use of power cables having high permeability and high
conductivity could help to reduce the generated EMF169.
As electric fields can be blocked by obstacles (walls, buildings, etc.) another option
could be the use of trees to protect the population against ELF. In this case, trees act as
a shielding and reduce electric fields. In winter, evergreen trees such as pines are
better at decreasing ELF than deciduous trees; nevertheless the effectiveness of trees
is poor compared with other options165,170 and they do not shield the magnetic
component of the field in any case.
Removing existing lines or replacing them with buried wire is very costly and would
require billions of Euros for re-construction, even in one country. The costs depend on
the length and on the voltage level of the power line. It is more and more expensive as
the voltage increases. The cost also depends on the levels of urbanisation of the
considered area. If the urbanisation is high, relocating power lines underground is
difficult and expensive168,165. According to the UK Electricity Association, additional
costs incurred from moving to underground lines from overhead lines could have to be
borne by the consumer170.
Table 4-2 presents some examples of costs to reduce exposure to ELF.
Table 4-2: Examples of costs of the ELF exposure reduction165
Mitigation measures Unit Costs (× 1000 €)
Vector-sequence rearrangement
Per power line 350-1300
Phase conductor splitting Per km section 70-300
Line relocation Per km section 320-1200
Undergrounding Per km section 1100-8000
The relocation of power lines will not change ELF exposures from indoor wiring and
low-voltage power distribution. Generally, indoor wiring does not lead to exposure to
high ELF, but there are exceptions. These exceptions often occur in older houses or
multi-storey buildings with many apartments, as these situations increase the chances
to have unbalanced currents that may produce elevated ELF. This kind of exposure can
169
Centre for marine and coastal studies centre for intelligent monitoring systems applied ecology research group. A baseline assessment of electromagnetic fields generated by offshore windfarm cables. 2003: cvi.se/uploads/pdf/Kunskapsdatabas%20miljo/Flora%20och%20fauna/marina%20organismer/forskningsresultat/Elkablars%20inverkan%20-%20Cowrie.pdf [Accessed online 18/05/2010] 170
Alasdair and Jean Philips. Buying an “EMF Safe” Property - Powerlines and pylons: www.powerwatch.org.uk/library/downloads/emf_property-02-20090604.pdf [Accessed online 18/05/2010]
72 Promoting healthy environments: Electromagnetic fields
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be reduced by replacing the existing electric system with a new modern system.
Following are some of the specific technical options to reduce ELF from indoor
wiring165:
Using wire power circuits as radial circuits instead of ring circuits
Keeping “go” and “return” currents physically close together at all time,
particularly for light and underfloor heating cables
Protecting the whole electrical installation with a residual current device
Using electronic electricity meters rather than rotating-disc meters
Using wire cables which has a screen without the sheath
Putting the wiring in metal conduits
Using extra-low-voltage circuits at home
Using earthed metal rather than plastic cases
However, one of the main difficulties is to identify houses with elevated magnetic
fields since this can only be identified with longer term (at least several hours) field
measurements. In the UK or Germany, it is assumed that magnetic fields above 0.2 µT
caused by indoor wiring can be detected in approximately 1 out of every 200
apartments171. The costs of such renovations could be high and need to be covered by
the owner, which might influence the monthly rent.
The report of the Stakeholder Advisory Group on ELF EMFs (SAGE) advised to apply
these suggestions only in new homes or in the case of rewiring. These mitigation
measures could be equally put in place in any building.
These measures seem financially feasible except for cables that have a screen without
the sheath because their price is higher than a standard cable; therefore cheaper
version of these cables should be developed. Earthed metal is equally more expensive
than plastic cases.
ELF from electrical equipment in homes can also be reduced by changing the user
behaviour. For example, one can reduce the ELF exposure by increasing the distance
from appliances, locating sockets away from the bed, and switching off devices when
not in use165.
171
Schüz J, et al. Extremely low frequency magnetic fields in residences in Germany. Distribution of measurements, comparison of two methods for assessing exposure, and predictors for the occurrence of magnetic fields above background level. Radiat Environ Biophys. 2000 Dec;39(4):233-40
August 2010 Promoting healthy environments: Electromagnetic fields 73
4.2.2. APPROACHES TO REDUCE EXPOSURE TO IF
An example of a successful introduction of self-regulation for EMF emissions is the
development of the TCO standard172 for computer monitors, which was first introduced
in 1992. The TCO standard regulates EMF levels and the labelling of monitors
complying with TCO standard (Figure 4-1) has become a quality characteristic and was
successful on the market.
Figure 4-1 : Logos of the TCO standard for displays and headsets173,174
Anti-theft devices and security installations are discussed here but they exist both in
the IF and RF ranges. EMF levels of anti-theft devices may be relatively high, to fulfil
the aim of detection of stolen goods, preferably also under several layers of clothing.
Demanding lower exposure is therefore in contrast to the objective of installing such
devices. Nevertheless, it has to be guaranteed that protection levels are not exceeded
and employers must make sure that working areas of employees are far enough from
the installations to avoid long-term exposures.
EMF from welding devices, heaters, electro-surgery, etc. can expose workers to static
fields, ELF or IF and mitigation measures may relate to the work area and/or workers’
exposure or to the source. Technical actions include the reduction of unnecessary
exposure through an appropriate design of electrical devices or through shielding.
Personal protection equipment, such as gloves, safety shoes and electromagnetic
shielding structures that are adapted to the characteristics of workers’ body and to
their activities can then be used175,176.
172 The TCO labelling system was created following observations of an increase in health problems among
office employees, related to poorly designed IT equipment. TCO Development is a limited company owned by TCO, Tjänstemännens Centralorganisation (the Swedish Confederation of Professional Employees). TCO Development is a member of GEN, the Global Eco-labelling Network. TCO Development website is available on www.tcodevelopment.com [Accessed online 05/07/2010] 173
Futura-Environnement. Ordinateurs et téléphones portables : quelques réflexes verts : www.futura-sciences.com/fr/news/t/developpement-durable-1/d/ordinateurs-et-telephones-portables-quelques-reflexes-verts_18775/ [Accessed online 25/05/2010] 174
Plantronics Sound Innovation. TCO Approved: www.plantronics.com/europe_union/en_GB/company/tco.jsp [Accessed online 25/05/2010] 175
European Agency for Safety and Health at Work. Working Environment Information - Assessment, elimination and substantial reduction of occupational risks: osha.europa.eu/en/publications/reports/TEWE09001ENC [Accessed online 19/05/2010] 176
Falsaperla R., Spagnoli G., Rossi P. Electromagnetic fields: principles of exposure mitigation. International Journal of Occupational Safety and Ergonomics. 2006; 12(2): 195–200
74 Promoting healthy environments: Electromagnetic fields
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4.2.3. APPROACHES TO REDUCE EXPOSURE TO RF
The major contributions of residential RF exposure come from mobile phone base
stations and cordless phone base stations. New technologies like wireless computer
networks (WLAN)177 contribute further to this exposure. Cordless phone base stations
appear to contribute an unnecessary amount of exposure, because many of the base
stations emit RF also when the handset is not in use. This is particularly so with the so-
called DECT (“Digital Enhanced Cordless Telecommunications”) technology178.
However, it is technologically feasible to produce base stations generating EMF only
during use. To date the market share of such products is low.
With regard to the location of mobile phone base stations, similar considerations apply
as in regard to power lines. Precautionary measures, such as demanding
technologically feasible lower emissions as in Switzerland, might be applied. However,
this might increase costs for setting up mobile phone networks and might result in
additional base stations. These aspects should also be communicated to the public.
The system of power adaption of mobile phones also has a direct effect on exposure.
With an excellent connection to the nearest base station, the power level is reduced by
a factor of up to 1000 times compared with a very bad connection to the nearest base
station when the mobile phone is on full power. For instance, the GSM (“Global System
for Mobile Communications”)178 900 MHz mobile phones operate with 15 power levels
from 2 W to 0.003 W. If the phone is receiving a strong signal from a particular base
station, mobile phones will require less power to communicate. The new UMTS
(Universal Mobile Telecommunications System)179 technology is already related to
lower mean power levels than the GSM technology, and as a consequence of the
replacement of GSM by UMTS, the average exposure levels by amount of use become
lower.
User behaviour and network optimisation can equally influence individual EMF
exposure. Indoor use of mobile phones or use while moving or in very busy networks is
usually related to higher exposure. Asking operators to optimise networks may result
in more base stations.
The benefits of moving mobile phone base stations are complex to evaluate. Removing
mobile phone base stations from residential areas would reduce the number of
177
A wireless local area network (WLAN) provides a connection to Internet and allows the communication of different devices via a wireless method. Wi-Fi is an example of WLAN. 178
DECT (Digital Enhanced Cordless Telecommunications) is a standard for digital cordless phones. Like another important wireless standard, Global System for Mobile communication (GSM), DECT uses time division multiple access (TDMA) to transmit radio signals to phones and to access a fixed telecoms network via radio. Whereas GSM is optimized for mobile travel over large areas, DECT is designed especially for a smaller area with a large number of users, such as in cities and corporate complexes. A user can have a telephone equipped for both GSM and DECT. 179
Universal Mobile Telecommunications System (UMTS) is the European standard for the third-generation (3G) mobile communication systems which provides an enhanced range of multimedia services using radio spectrum.
August 2010 Promoting healthy environments: Electromagnetic fields 75
persons who live in the main beam180 of the base station. Conversely, exposures of
individuals might also increase if the mobile phone has to increase emission power to
communicate with a base station which is further away. Average exposure levels might
also increase if such an approach requires the building of additional base stations to
achieve the same coverage. No general assessment can be made since this generally
depends on the local situation.
As explained above, in respect to the sitting of mobile phone base stations, it is not
clear what the impacts of avoiding higher exposures by the base station are, with
regard to the exposure from mobile phones which need to increase their emission
power, or by needing additional base stations, on the vast majority of persons not
living in the main beam of an antenna. Systematic studies are urgently needed to prove
or refute the usefulness of such precautionary measures.
Figure 4-2 shows that at a higher distance, the lower exposure to EMF from the base
station may be counterbalanced by increased emissions from the mobile phone.
Figure 4-2: Exposure from base stations and mobile phones according to their relative location
Users should receive clear instructions on how to use mobile phones with reduced
power and adapt their behaviour (see also section 4.3.3. ). Furthermore, mobile
phones should always be sold together with headsets which permit to reduce head
exposure even if the absorption in other parts of the body close to the mobile phone
may increase181.
180
The main beam is the zone of EMF emission caused by mobile phone base stations. 181
Health Protection Agency. Mobile telephony and health exposures from mobile phones. 2008: www.hpa.org.uk/webw/HPAweb&HPAwebStandard/HPAweb_C/1195733844923?p=1158934607786 [Accessed online 18/05/2010]
76 Promoting healthy environments: Electromagnetic fields
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People can also reduce their exposure to EMF by limiting the length and the number of
their calls. In cordless phones a loudspeaker can be used to take the phone away from
the head and the body182.
Moreover, other communication systems also have to be considered. There is a clear
benefit in good communication systems for the police, fire fighters and ambulances,
and here exposure reduction measures have to be balanced against this benefit.
Analogue broadcast stations for radio and TV often operate in the mega-watts range
and therefore lead to much higher exposure levels than the other communication
systems; however, they are currently being replaced by digital systems with lower EMF
levels. Military installations often operate high power antennas, but little information
is publicly available on their exposure distributions.
4.2.4. APPROACHES TO REDUCE EXPOSURE TO SF
Not many technical options exist to reduce the exposure to SF. Conductor materials
can be used to protect against electric static fields but magnetic static fields are
difficult to shield, they can be mitigated with ferromagnetic materials such as iron,
nickel and cobalt. The choice of the material is important because the value of
magnetic permeability of ferromagnetic materials changes with magnetic field
strength175.
4.3. POLICY APPROCHES
Policy options which could be chosen to lower EMF exposure include:
Setting up legislation on limit values for emission or exposure, monitoring or
technical actions in planning, renovation and new construction of buildings and
power lines.
Legislative recommendations on emission or exposure.
Advice on precautions targeting general public.
Exposure limits may be established by policy makers in order to limit human exposure
to EMF in a living or working environment. These types of limits normally incorporate
safety factors. Guidance of best practices limiting personal exposure can also be
developed183.
Policy actions can therefore be set up through entirely new policies or regulations, but
also through the modification of existing policies or regulations as well as the revision
of existing guidelines or recommendations. To this aim, policy makers in the MS could
182
Australian Mobile Telecommunications Association. Practical Advice on Reducing Exposure from Mobile Phones: www.amta.org.au/pages/Practical.Advice.on.Reducing.Exposure.from.Mobile.Phones [Accessed online 19/05/2010] 183
WHO, Extremely Low Frequency Fields Environmental Health Criteria Monograph No.238, 2008. Chapter 13. Accessible on the WHO website: www.who.int/peh-emf/publications/elf_ehc/en/index.html [Accessed online 25/03/2010]
August 2010 Promoting healthy environments: Electromagnetic fields 77
choose to implement international guidelines such as the EU guideline or the ICNIRP
recommendations, or, at the national level, choose to decrease exposure limits using
even stricter guidance. This was the case, for example for Greece, where exposure
limits were defined for sensitive groups to 60 or 70 % of the ICNIRP guideline values
(see section 3.3.1. ).
Legislation demanding protection of the public could alternatively be used to motivate
the production of recommendations or guidelines by competent authorities. Existing
international limit values or guidelines (e.g. Directive 2004/40/EC, Council
Recommendation 1999/519/EC) can be used in national administration, or be adjusted
to stricter levels depending on the evolution of epidemiological studies studying the
exposure effects linked to long- or short term exposure. Another aspect to consider is
that guidelines or recommendation are easier to revise than legislation as more
scientific information on possible health effects becomes available.
Setting EMF emission standards for technical equipment is another option of policy
action. Policy options could also include funding or promoting research programmes on
the topic of exposure and potential need for protection. Furthermore, policy makers
may choose to improve the science/policy interface communication and promote
coordination between political and scientific stakeholders. They can also take action to
improve the dissemination of information on EMF associated risks, or purpose action
plans involving different types of stakeholders.
4.3.1. POLICY APPROACHES TO REDUCE EXPOSURE TO ELF
4.3.1.1 Policy measures to reduce the exposure to power lines
There are several possible policy options to set up corridors (see section 4.2.1 above)
between buildings and power lines. Of course, the most evident option is to provide
general procedures for planning and restrict the construction permits accordingly.
Legislation on corridors may be built up to provide either indications on maximum
exposure limits, or a minimal distance from each respective type of power line. The
enforcement of a minimal distance is generally easier to apply when conceiving an
urban planning rather than later on (e.g. during renovation), because no EMF
measurements or expert advice are needed in situ.
In urban planning, a case-by-case approach can often be useful in decisions concerning
the location of new buildings or power lines. When assessing the overall impacts of a
project on health and environment there are many aspects to take into account. There
may be situations where it is relevant to demand stricter or less strict exposure levels,
depending on what other health or environmental issues are taken into account.
Legislative action in the form of legally enforceable exposure limits does not allow
flexibility in planning which may be needed in such cases, but on the other hand it
provides a strong support for the local authorities.
78 Promoting healthy environments: Electromagnetic fields
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The use of recommendations/guidelines to set up corridors between buildings and
power lines could take different forms. For example, in Sweden, the National Board on
Health and Welfare (Socialstyrelsen) recommend185 that exposure should be limited
through design or location of the power line, and that exposure should not be elevated
for the public compared to reference values. This may, in practice, be implemented
through the creation of corridors when constructing new buildings. However, power
line owners, when applying for permission to build a new power line, would have to
ensure that once the new line is built, no new homes are constructed within the
specified distance, by demonstrating rights over land adjacent to the line184. Whether
this policy option will impose a cost on power line operators will also depend on the
value of the land, i.e. whether the demand for land (and thus prices) on a certain
location is high or not. However, it must be remembered that the size of the corridor
needed will depend on the type of power line, and the recommended exposure level.
In the case of Sweden, the currently recommend reference value for acute exposure
normally does not impose changes on the planning process. Under the largest power
lines (400 kV) the field strength normally amount185 to 20 – 30 μT, and the reference
value for 50 Hz is 100 μT. Swedish authorities generally recommend that long term
exposure to ELF exceeding 0.4 μT should be avoided. The Figure 4-3 gives an idea of
the corridor normally needed to avoid exceeding the recommended limit value.
Another aspect to consider is the psychological aspect of residing too close to a power
line which, independently of the real risk, can affect the urban development of a
specific area. In the early planning and permission stages, authorities could thus advice
the electricity company seeking to build a new power to look for locations in non
populated areas, in order to avoid such undesirable effects.
In any case, the use of the best available technique could be requested by policy
makers. Thus, for instance, the power line owner may be demanded to use a specific,
low emitting, technical design to reduce EMF exposure. Utility companies could be
encouraged through legislative tools to choose the optimal design (with regard to EMF
emission) for all new lines, and also be encouraged to convert existing lines where
possible and justifiable. It can be an option to ban the specific types of power lines
known to create high exposure levels and existing power lines may be improved in the
context of general repairing and maintenance schemes.
Of course, for any policy option, the implementing authorities need a suitable
administrative framework. This should be coupled to some technical information,
implying an additional cost for training and eventual monitoring campaigns.
184
R K Partnership Ltd, SAGE, Stakeholder Advisory Group on ELF EMFs (SAGE) Precautionary approaches to ELF EMFs First Interim Assessment: Power Lines and Property, Wiring in Homes, and Electrical Equipment in Homes, UK, 2007 185
The Swedish National Board of Health and Welfare, (Socialstyrelsen) Meddelandeblad, Electromagnetic fields from power lines Communication on Elektromagnetiska fält från kraftledningar, June 2005
August 2010 Promoting healthy environments: Electromagnetic fields 79
Figure 4-3 : ELF magnetic field values based on the distance to power line185
Another factor to consider is that, due to logistic and cost issues, the implementation
of this kind of policy option will only be feasible in the case of future urban structures,
with little or no effect on the present overall exposure of the European population. The
majority of exposure will thus remain associated with existing lines. This means that
recommendations applied on new lines may not significantly affect the current public
exposure, but avoid its increasing in the future.
4.3.1.2 Policy measures to reduce the exposure from indoor wiring and
other electrical devices
Standardisation of electrical equipment already exists in many countries. In order to
limit, as far as possible, exposure to ELF from indoor wiring and other electrical
devices, introduction of new technical standards or modification of the existing
standards may be used. In countries where specific organisation for standardisation of
electrical equipment exist, the administrative cost of creating new standards or
modifying the existing ones is of course lower than for other countries. However, the
definition of new technical standards may demand a multi-stakeholders consultation
process which can be time and resource consuming.
The implementation of a technical standard on electrical equipment is generally well
received by the public because it contributes to an increased feeling of security. The
80 Promoting healthy environments: Electromagnetic fields
August 2010
negative side is that standards take time to develop, and the best available technique
may quickly be replaced by an even better one before the finalisation of the decision
process. This means that sometimes ‘just‘ fulfilling a standard may not demand from
the producer or electrician to use the best available technique available at that
moment. Standards may also give a false sense of security, or may, if they differ a lot
from the indications of risk in current science, undermine the possibilities to make a
science based assessment164.
Through policy actions, local authorities could be encouraged to promote specific
monitoring and measurements in their areas. For example, in the same way as public
estates are sometimes screened to find buildings leaking heat and thus causing
unnecessary energy consumption, authorities could monitor the ELF exposure levels
for sensitive groups and remove indoor high current structures. Through municipality
action plans, wire code inspections in homes, schools, offices, etc. could be performed.
This again increases the feeling of security among citizens, but may also increase
insecurity for people in properties where no action is taken. The need for information
and communication with the public may therefore be rather large. Wiring and other
equipment can often be replaced within renovation schemes for properties, see
section 4.2.1.
Other possible policy measures include:
Programmes of education and information for electricians
Information to public on precaution on how to limit exposure of ELF EMF in
homes, for instance by turning off devices, choosing the right location of beds,
etc. This could be a useful tool to encourage the population to take
precautionary action.
4.3.2. POLICY APPROACHES TO REDUCE EXPOSURE TO IF
Several preventive measures could be taken to reduce IF exposure especially in the
working environment. Occupational exposure to IF is generated, for example, by anti
theft devices in shops, by MRI scanners in hospitals and by computers in offices (Table
2-3). A policy measure could be to implement an action programme to prevent and
measure the exposure of specific groups of workers. Such a scheme could be
implemented as legislation or a voluntary scheme on State initiative.
A reorganisation of the working environment, for instance, may allow avoiding the
presence of workers close to IF emitting devices or electric cables. These measures can
be generally implemented at moderate cost and their effectiveness is strengthened by
workers’ education and training. This kind of measures could be strengthened by ad
hoc inspections to verify that the safety instructions are appropriately followed.
Another possible action could be to have a mandatory medical register for exposed
workers who should be regularly examined to determine whether they present
August 2010 Promoting healthy environments: Electromagnetic fields 81
harmful health effects186. Worker Unions could be a possible stakeholder in developing
a suitable programme in agreement with industrial R&D scientific staff, occupational
medical doctors and policy makers. There is also the option to plan preventive health
examinations for exposed workers and set up a specific follow up in coordination with
occupational doctors. As lack of such information is relatively common, occupational
doctors should be considered an important target group for information on EMF
sources and highly exposed professions187.
Relatively little research has addressed the issues related to IF (and indeed also SF)
frequency ranges, and the specific exposure situations that may occur following the
development of new types of technology. Therefore policy options in these frequency
ranges could include funding or initiating research programmes, as well as improving
the research-stakeholder interface on the topic of exposure and potential need for
protection regarding occupational exposure. The advantages of promoting research are
the outputs which can be used as a basis for considerations in decision-making, as well
as in the development of technical solutions185. However, the development of new
scientific programmes is often time consuming, and the results may not always be
directly applicable in policy making.
Other possible policy measures include:
Standardisation could be used for computer screens, induction hobs and
hotplates and telephonic equipment, computer and television screens
containing cathode ray tubes, compact fluorescent lamps and more
Programmes of education and information for staff exposed to elevated levels
of exposure, on IF-related risks and the requirements of safe work procedure
such as those working close to devices (e.g. in shop exit doors), electric
engines, and card readers or in industrial processes such as welding, medical
applications such as electrosurgery. Educating key personnel may also mean
that these persons can choose low-emitting equipment on purchases, which in
turn puts a pressure on producers.
Information to public on exposure of IF EMF in homes, for example the effect
of turning off devices, choosing location of beds etc., could be a useful tool to
encourage the population to take precautionary action.
Regarding advantages and disadvantages of legislation and recommendations see the
discussion on power lines in section 4.2.1. On a workplace, however, the employer may
have smaller interest in taking recommendations into account than legislation. Again, it
186
Independent Expert Group on Mobile Phones (UK), Mobile Phones and Health. 2000 Available online at www.iegmp.org.uk/report/text.htm [Accessed online 08/03/2010] The Independent Expert Group on Mobile Phones, was formed following a decision of the UK Government in 1999 to establish an independent expert group to examine possible effects of mobile phones, base stations and transmitters on health. The group was operative until 2000, with input from a large range of stakeholders. 187
Jolanta Karpowicz, Central Institute for Labour Protection – National Research Institute, Poland, Maila Hietanen, Finnish Institute of Occupational Health, Finland, Krzysztof Gryz, Central Institute for Labour Protection – National Research Institute, Poland. International EU Directive, ICNIRP Guidelines and Polish Legislation on Electromagnetic Fields. Journal of Occupational Safety and Ergonomics (JOSE), Vol. 12, No. 2, 125–136, 2006.
82 Promoting healthy environments: Electromagnetic fields
August 2010
is important that the staff has access to information and can put pressure on the
management in case IF related risks are ignored in the work place.
4.3.3. POLICY APPROACHES TO REDUCE EXPOSURE TO RF
4.3.3.1 Limiting exposure from mobile phones and similar devices
The question of exposure caused by the vast and increasing use of mobile phones and
similar devices may be addressed in several ways by policy measures. When it comes
to personal use, one policy option is information and recommendations to public on
amount of use, type of equipment to use, and how to use it to reduce exposure, as a
matter of precaution. German authorities, for instance, have published advice on the
precautionary principle for mobile phone use188. Such advice could be part of the user
manual, and could include instructions on how to reduce output power while using the
mobile phone for example by keeping a certain distance between the mobile phone
and the body (15 – 25 mm), or the benefits of avoiding the use of mobile phones while
moving. Stricter policy actions could involve prohibiting of certain types of services
which result in increased exposure for sensitive groups. An example could be a ban on
offers from mobile phone operators of flat rates for children and teenagers. Advice
could also be a relatively inexpensive option, whereas a ban on certain services would
involve considerable processes of communication with stakeholders, namely the
mobile telephony services sector. There may also be a problem on international
market if services that are banned in one country are available in a neighbouring
country.
The social aspect of security and communication linked to mobile phones is also an
important aspect to be taken into account. Many parents and children feel safer if they
know that they can reach each other if something unexpected occurs. The use of ICE
numbers189 on the mobile phone is also an example of how mobile devices can improve
the feeling of security. The benefits of such measures may be debated, since there is to
date no clear scientific proof of adverse effects from using mobile phones. On the
other hand, guidance on many precautionary or mitigation measures is usually a low
cost policy option.
Another policy option is the mandatory labelling of equipment to inform consumers
and control exposure. For example, all mobile phones sold in Germany must comply
with a limit value for SAR190 radiation (which must not exceed 2 W/kg). Usually the
manufacturers provide the SAR value of each phone in the instruction manual and on
their website. A list of SAR values for the available mobile phones can be found on the
188
German Federal Office for Radiation Protection, Webpage: www.bfs.de/en/elektro/faq/emf_faq_vorsorge.html, [Accessed online 08/03/2010] 189
ICE is an abbreviation of ‘In Case of Emergency’. By registering a phone number to your closest relation under the contact name ICE in your phone address book, an un known person can contact your relatives in case of an emergency, without knowing their names. 190
Specific Absorption Rate value, i. e. heat energy absorbed per kg body tissue absorbed by head and body. The SAR value is considered the best indicator of the user’s exposure.
August 2010 Promoting healthy environments: Electromagnetic fields 83
Federal Office for Radiation Protection (BfS) website191. However, the BfS recommends
using mobile phones whose SAR value is as low as possible. As advice to consumers,
mobile phones put on the market may carry the eco-label “Blue Angel”, which
established the criteria for mobile phones in June 2002. The label ensures that
emissions from the mobile phone do not exceed a SAR value of 0.6 W/kg, and that it
complies with a series of other criteria191. However, due to the power adaption of
mobile phones, having a good connection to the base station produces a much more
effective exposure reduction than a phone with a low SAR value.
French mobile phone operator Orange can be mentioned as an example of voluntary
environmental labelling of mobile phones192. The label (shown in Figure 4-4) is used for
mobile- and cordless phones in France, Spain and Romania. The label includes several
environmental parameters, of which the SAR value190 is 1.
Figure 4-4: Mobile phone operator Orange’s environmental -label (DAS is French equivalent of SAR)193
Similarly, mandatory measuring and reporting systems for RF emissions from products
put into the market is an interesting policy option. For example since 2003, Finnish
authorities measure the SAR of the cell phones put on the market194. In radiation tests,
STUK195 measures SAR with a testing system which is in compliance with international
191
The German Federal Office for Radiation, Webpage: www.bfs.de/en/elektro/faq/faq_mobilfunk.html/#3. [Accessed online 08/03/2010]) 192
Orange in france webpage (in French or Spanish) www.orange-en-france.orange.fr/Developpement_durable/etiquetage_ecologique.html?p=4.3.5 [Accessed online 18/06/2010] 193 This label was conceived by BIO Intelligence Service for Orange and World Wildlife Fund. 194
Webpage of Finnish Radiation and Nuclear Safety Authority, on mobile phone testing: www.stuk.fi/sateilytietoa/sateilevat_laitteet/laitteiden_valvonta/en_GB/matkapuhelimet/ [Accessed online 08/03/2010] 195
The Finnish Radiation and Nuclear Safety Authority, www.stuk.fi [Accessed online 08/03/2010]
84 Promoting healthy environments: Electromagnetic fields
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standard196. It is assumed that the measured SAR value is at least as high as the
maximum exposure in an actual situation, and thus, for the duration of the test, the
mobile phone operates at its maximum power. The technology used in the phone,
different user settings, and the anatomic features of the user’s head, both children’s
and adults’ are taken into account when testing. The measured phones are chosen
randomly, primarily from the top-selling models. The tests, performed according to
International (IEC 62209-1) standard and with specially designed equipment, are
technically demanding and time-consuming. Therefore, only about 15 models are
measured annually194. The tests results are available on the authority’s (STUK195) web
page194 along with information on use and risks. Labelling, measurements, and
reporting are all policy options which may be elaborated in cooperation with industry,
which may lower the need for resources to be allocated from the public authorities.
Furthermore, these options may promote a technical development towards lowering
emissions from mobile devices. Because of the wide spread use of mobile and wireless
equipment, even small improvements may be of great benefit to the overall IF
exposure.
When it comes to indirect exposure to mobile devices, one policy option is to restrict
the amount of use of mobile phones in situations where people are forced to stay close
to each other over longer periods of time. This could include, for example, work
situations or travelling. A more extreme measure to limit overall exposure would be to
create EMF free zones. In Sweden, when travelling with Swedish Railways, one can
choose to sit in a carriage where mobile phones must be switched off to reduce noise.
Although the primary aim of this policy is not to reduce electromagnetic fields, this
concept could be extended to EMF. If offered as a voluntary option to travellers, this
measure may not have to be very expensive, and may even be used as a competitive
advantage by transport companies. Depending of the travellers’ awareness of EMF
issues, however, the effect may vary.
4.3.3.2 Limiting exposure from antennas and base stations
In some of the Member States, there may not be existing administrative structures for
impact assessments, public consultation or information prior to the installation of
antennas and base stations for RF equipment. In these countries, therefore, relatively
large antennas can be installed in residential areas without the need for a full planning
application186. This means that although it may be generally accepted by the industry
that exposure of people close to base stations or antennas are well within the limits
suggested in guidelines, there is no independent body to inform public and ensure that
exposure limits station/antenna are not exceeded. The installations may therefore still
cause worries among the public186. One policy option is to make sure that location of
antennas and base stations of a certain size/power shall be treated through existing
procedures for planning and permission. This would mean that authorities should have
196
International standard used: IEC 62209-1
August 2010 Promoting healthy environments: Electromagnetic fields 85
the possibility to demand measurements or calculations for exposure assessment prior
to authorising the construction of new antennas and base stations.
Added to this, the setting up of a mandatory periodical monitoring to map areas where
there is a high density of base stations could be an interesting option. This would help
to identify areas where exposure is potentially high, which could in turn affect
permissions for further antennas to be installed, or indicate that precautionary
technical actions need to be taken. For example, national databases could be set up by
public authorities giving details of all base stations and the emission rates from
these186.
If no administrative authority exists which has the power to give construction permits
and perform the monitoring of antennas and base stations, the cost for implementing
the necessary legislation or policies may be high. Cooperation with the industry in the
development of such systems is important to improve the result, gain acceptance and
to reduce the cost. Future evaluation and research would be greatly facilitated by
permission- and monitoring schemes, which in the long term will be of benefit in risk
assessments regarding EMF.
4.3.3.3 Limiting exposure at home
Location and use of electrical devices and installations in homes, such as cordless
phones, wireless network computers, anti theft devices and microwave ovens may
affect exposure levels. Exposure from these sources may be difficult to address
through policy measures other than information on products and use of products (such
as for mobile devices, see 4.3.3.1). Setting up appropriate information programmes on
how to choose the location of RF emitting equipment in the room or apartment to
reduce RF exposure at home could also be a useful tool to encourage the population to
take precautionary action. Such advice could include when to turn off devices, and the
optimal location of beds in relation to certain electrical devices (for the policy option of
information on precaution in homes, see section 4.3.1.2).
Another policy measure could be the setting up of educational and information
programmes targeting salesmen at electronic shops, also advising on EMF when selling
cordless mobile phones or wireless computer installations.
4.3.4. POLICY APPROACHES TO REDUCE EXPOSURE TO SF
Static fields are produced in some industrial processes, for example in the aluminium
and chlor-alkali industries, welding processes and in certain railway and underground
transport systems. Policy measures taken could include the measures described for
occupational exposure in the section on IF EMF (see section 4.3.2. ). Other possible
policy measures include programmes of education and information for staff exposed to
elevated levels of exposure (for the policy option of occupational education, see
section 4.3.2. ).
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August 2010
4.4. CONCLUSIONS AND RECOMMENDATIONS
There is no conclusive scientific evidence of any adverse health effects below the
protection limits of exposure to electromagnetic fields proposed by the International
Commission on Non-Ionising Radiation Protection (ICNIRP), implemented in Europe by
the Council Recommendation 1999/519/EC. The advantage of applying the ICNIRP
guidelines is their solid scientific basis of established biological effects.
Nevertheless, there is remaining scientific uncertainty in many fields, reflected by the
call for further research by the Commission’s Scientific Committee on Emerging and
Newly Identified Health Risks (SCENIHR) over the whole frequency spectrum. In the ELF
range, there is a suggestion of a possible increased risk of childhood leukaemia
associated with long-term exposures to magnetic fields as low as 0.2-0.4 µT, which – if
causal – would explain approximately 1% of all childhood leukaemia cases in the
European Union. Further, a modestly increased risk of Alzheimer’s disease may be
confirmed by future studies, although it is premature to draw any conclusions as
available data today are highly controversial. Little research has been done in the IF
range with more and more technologies emerging. In the RF range, mobile phone use
is a very common source of exposure and even when scientific studies conducted to
date do not show increased risks of any disease, data on longer term use of the devices
beyond 10-15 years is sparse. Based on this, avoidance of unnecessary exposures,
implementation of measures lowering emissions to levels that are currently technically
feasible and not related to high expenses, and guidance of the public on how to avoid
exposures, if they wish, appear to be the most appropriate options. Nevertheless, as
public perception is different for collective (e.g. base stations) and individual (e.g.
mobile phones) equipment, the management of concern due to these devices should
be different. In parallel, research activities must continue to further reduce uncertainty
in this field. Obviously, science-policy interface and public information about research
results must be associated to research.
A precautionary lowering of protection limits is a rigorous step to enforce lower
exposure, a policy option considered by some regional authorities within the EU.
However, there is a lack of data on the impact of stricter exposure levels on the total
distribution of exposure levels in the population. In the ELF range, average 24 hours
exposure to magnetic fields of the general public rarely exceed 1 µT, thus, protection
limits of 1 µT compared to the existing 100 µT would hardly make any difference and
appear to rather address public concern than leading to a measurable reduction of
exposure. Stricter levels of exposure have to be accompanied by monitoring in order to
ensure that these levels are kept, as the technologies remain the same, but introduce
additional costs for surveillance. It is a recommendation to perform measurement
surveys of exposure in regions of lower protection limits to compare them with
exposure distributions in regions of the adopted EC Directive, to quantify the impact of
the measure.
August 2010 Promoting healthy environments: Electromagnetic fields 87
There are some technical options to further reduce exposure, ranging from very costly
to moderate expenses. An expensive option is removing existing power lines or
transmitter stations and it is doubtful this can be achieved on a national level. Only
applying the option of minimum distances between such installations and residential
areas requires cost-benefit analyses, however, it appears that this is mainly an option
for less densely populated areas in high-income countries; it would also introduce
social inequality if measures are taken in respect of new installations while existing
ones remain unchanged. Some new technologies appear to be related to lower
exposures, even when exposure reduction was not the primary aim: examples are the
new generation of mobile phones (UMTS versus GSM) or replacing the analogue radio
and TV broadcasting systems with the new digital one. Technically unnecessary
exposures are related to devices emitting fields when they are not in use, i.e., electric
devices in standby modus or DECT cordless phone base stations.
Avoidance of unnecessary exposure is mainly an issue for users of EMF devices. Electric
installations in homes should use modern systems, as elevated fields from indoor
wiring are often found in older homes. Electric devices should only be switched on
when they are used. Landline phones instead of cordless phones or mobile phones
should be preferred in families with small children and, further, teenagers should be
discouraged to extensively use mobile phones. Such recommendations could be
supplemented with policies to prohibit offering of flat rates for children and teenagers.
Mobile phones could be sold always with wired hands-free devices, to automatically
provide customers the opportunity to reduce exposure when using them. How to use
of mobile phones under low power conditions could be a mandatory part of the mobile
phone manual and the current output power could be indicated on the screen of the
phone.
In conclusion, society and/or decision-makers have to decide which options of
exposure reductions are to be applied, given the present scientific uncertainty in
relation to some exposure scenarios. However, it is unclear at the moment whether
precautionary measures lead to any benefits. For this purpose, the options, their
potential benefits, and potential lack of any benefits together with the implementation
costs have to be communicated in a transparent manner. At the same time, more data
are needed to have a better overview of an individual’s total EMF exposure in a
modern environment, to better identify where exposure peaks occur, and how they
can be avoided.